Although Zotero comes with only a few bibliographic styles, it can incorporate other styles available from EndNote.
To add a new style to Zotero:
Go to the EndNote styles page and download the style you want.
Open Zotero. Go to Preferences (under Zotero, Edit, or Tools).
Click the "Cite" button.
Click the "Styles" tab.
Click the + button at the bottom right.
Select the style file you saved in step 1.