It looks like you're using Internet Explorer 11 or older. This website works best with modern browsers such as the latest versions of Chrome, Firefox, Safari, and Edge. If you continue with this browser, you may see unexpected results.
Zotero is a tool that can help you manage your citations. It includes a desktop component and a web connector, and integrates with Microsoft Word and Google Docs to make it easy to insert in-text citations and bibliographies as you write.