EDIT MAIN
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  1. Open up a document in Google Drive
    Click on "Tools" and select "Explore"
    Use the new search window that opens on the right and search Google
    The results are active links to websites, and if you select "quotes" icon Google Docs inserts MLA or APA citations directly to your Google Doc.
  2. EasyBib
    The Free MLA Automatic Bibliography and Citation Generator
    http://www.easybib.com/
  3. bibme
    The Free APA Automatic Bibliography and Citation Generator
    http://www.bibme.org/apa
  4. Citation Maker
    Create a Works Cited or Reference list of research sources following the MLA and APA standard citation formats.
    http://secondary.educator.oslis.org/cite-sources