Google-drive – make columns in a Google document

Google recently updated the document revisions and they are displaying the exact date for each of them. For older documents it doesn't seem to be working, but at least all your new documents will be the way you wanted it.

Google Docs now has built-in citation, using the research tool.

The Research tool makes it easy to add information from the web to your documents and presentations. To access the tool:

• Select the Research option from the Tools menu.
• Use the keyboard shortcut (Ctrl+Cmd+I on Mac, Ctrl+Alt+Shift+I on PC).
• Right-click on a specific word and select Research.
• Choose scholar in the search bar; search for your citation, and click on "Cite as Footnote".

Source. EDIT: THIS IS NOW BROKEN. SOURCE

EDIT

I have been made aware of a third-party add-on that provides more extensive citation functionality to Google Docs called Paperpile. It provides many different inline and footnoted citation styles (They claim >7000).

Also, Faculty of 1000 Workspace (http://f1000.com/work/; geared at life sciences) has a google docs extension (http://f1000.com/work/faq/google-docs-add-on)