To insert references selected in EndNote:
Open the Word document and position the cursor at the location where you would like the citation.
From the Tools menu, go to the EndNote submenu, and then select Go to EndNote. From the EndNote tab, select Go to EndNote.
Highlight the desired reference(s) in your EndNote library.
From the Tools menu in EndNote, select the Cite While You Write submenu and select Insert Selected Citation(s). From the EndNote tab, select Insert Citation, and then Insert Selected Citation(s).