o install the MS Word plug in:
When installed the plugin will appear as below on Microsoft Windows:
Click View → Citation Styles → More Styles to search for citation styles on Mendeley Desktop.
You can use Mendeley to insert references into a Word document, generate a bibliography at the end of your document and format it in the citation style of your choice. When you install Mendeley Desktop on your computer, a Mendeley Cite-O-Matic toolbar appears within the References tab in Word
Generating Citations with Microsoft Word
Create a Stand Alone Biblography If you want to create a bibliography, without having a document that has in-text citations, you can do so directly from Mendeley Desktop. Select all the records you wish to add to your list, from your Mendeley Library, and then go to Edit and click on Copy. Once you have done this you can go to a text document, like Word, and simply click Paste. This will create a bibliography in your chosen citation style. Click Edit, then Copy to create stand-alone bibliography