We’re in the process of updating the documentation for Zotero 5.0. Some documentation may be outdated in the meantime. Thanks for your understanding.
How do I create a bibliography?
Select one or more items using shift-click or ctrl-click, then right click those selected items and select “Create Bibliography” (on a Mac, select items with shift-click and Apple-click and then ctrl-click the selected items). You can also right-click an entire Zotero folder of items (on a Mac, ctrl-click). Choose your desired citation style (APA, Chicago, or MLA), and the output format. You can save the bibliography as a rich text file (RTF), web page (HTML), or copy it to your clipboard.