inserting the citation from listbox

Hi,

I have a code here that use a listbox to view all the sources in the current list now my problem is that I don't know how to insert the citaiton if I choose one of the source in the listbox and then click the button "Insert Citation" but I tried to do it but I'm having a problem and I still doubt for the code in inserting a citation ,I'm sure it's wrong.

by the way here's my code

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using Microsoft.Office.Tools.Ribbon;
using Microsoft.Office.Interop.Word;
using Word = Microsoft.Office.Interop.Word;



namespace WordAddIn5
{

    public partial class Form1 : Form
    {
        Application wordApplication = null;
        Document wordDocument = null;


        object paramMissing = Type.Missing;
        object paramWdUnits = WdUnits.wdStory;
        object paramWdMovementType = WdMovementType.wdMove;

        object paramWdFieldTypeCitation = WdFieldType.wdFieldCitation;
        object paramWdFieldTypeBiblio = WdFieldType.wdFieldBibliography;
        
        public Form1()
        {
            InitializeComponent();

        }

        private void Form1_Load(object sender, EventArgs e)
        {
            BindListBox(GetCurrentList());
        }


       

        private string[] GetCurrentList()
        {
            Word.Application App = Globals.ThisAddIn.Application;
           
            Word.Document doc = App.ActiveDocument;
            Word.Sources sour = doc.Bibliography.Sources;
            string[] strItems = new string[sour.Count];
            for (int i = 1; i <= sour.Count; i++)
            {
                Word.Source ssour = sour[i];
                strItems[i - 1] = ssour.Field["Author"] + "; " + ssour.Field["Title"] + " (" + ssour.Field["Year"] + ")" +ssour.Field["Publisher"];
            }
            return strItems;
        }

        private void BindListBox(string[] strItems)
        {
            listBox1.Items.Clear();
            for (int i = 0; i < strItems.Length; i++)
            {
                listBox1.Items.Add(strItems[i]);
            }
        }

        

        private void button2_Click(object sender, EventArgs e)
        {
            // Insert a citation after the text just inserted to the bibliography
            // source added previously.
            Application wordApplication = Globals.ThisAddIn.Application;
            //wordApplication.Selection.EndKey(ref paramWdUnits,ref paramWdMovementType);
            wordApplication.Selection.Fields.Add(wordApplication.Selection.Range,
                ref paramWdFieldTypeCitation, listBox1.SelectedItems.ToString/*ref paramBiblioSourceTag*/,
                ref paramMissing);

            // Insert a page break after the citation added previously and then
            // add a bibliography to the document.
            wordApplication.Selection.EndKey(ref paramWdUnits, ref paramWdMovementType);
            wordApplication.Selection.InsertBreak(WdBreakType.wdLineBreak);
            wordApplication.Selection.InsertBreak(WdBreakType.wdLineBreak);
            wordApplication.Selection.InsertBreak(WdBreakType.wdLineBreak);
            wordApplication.Selection.InsertBreak(WdBreakType.wdLineBreak);

            //If find the Bibliography field in the document then update the field
            //otherwise insert a Bibliography field 
            bool isFoundFieldBibliography = false;
            foreach (Field field in wordApplication.ActiveDocument.Range().Fields)
            {
                if (field.Type == WdFieldType.wdFieldBibliography)
                {
                    isFoundFieldBibliography = true;
                    //update BibliographyField
                    field.Update();
                }
            }
            if (!isFoundFieldBibliography)
            {
                wordApplication.Selection.Fields.Add(wordApplication.Selection.Range,
                ref paramWdFieldTypeBiblio, ref paramMissing, ref paramMissing);
            }

        }

       
        }
    }

here's the error I get running that coce

Error1'Application' is an ambiguous reference between 'System.Windows.Forms.Application' and 'Microsoft.Office.Interop.Word.Application'

and I thnk my code in inserting a citaiton is wrong ,please try to run my code

Thank you in advacne

More Power

God Bless