Brandt, R. L. (2009). The Google Guys. Penguin Books.
Lua i Stíl Chicago (17ú heag.)Brandt, Richard L. The Google Guys. Penguin Books, 2009.
Lua MLA (9ú heag.)Brandt, Richard L. The Google Guys. Penguin Books, 2009.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.