Q. How do I create a hanging indent in Google Docs/Drive?

I am assuming you are in Google Docs/Google Drive. You cannot create a hanging indent in Google Docs the way you would in MS Word, but there is a work around solution:

1. After entering your citation, hit enter after the first line.
2. At the beginning of the second line of your citation, us the increase indent option on the Google docs toolbar. 
3. Your citation will now be both double spaced and have a hanging indent. If your citation has more than two lines, you'll need to hit enter after the second line as well, but the indent will already be there.