Download the Cite add-in. You will see Mendeley Cite on the Reference tab, on the right-hand side.
Place your cursor exactly where you want the citation to go in your Word document.
On the References tab, click the Mendeley Cite icon in the upper right, & sign in to your Mendeley account. Thie Mendeley Cite panel opens on the right.
Search for a reference in your library through the Mendeley Cite Search box, then one or more references using the check box,. When you're done, click the Insert button.
You can change the output style by using the Citation Style tab.