Butow, E., & Butow, J. (2012). Droid companion. John Wiley & Sons.
Lua i Stíl Chicago (17ú heag.)Butow, Eric, agus Joli Butow. Droid Companion. Indianapolis, IN: John Wiley & Sons, 2012.
Lua MLA (8ú heag.)Butow, Eric, agus Joli Butow. Droid Companion. John Wiley & Sons, 2012.
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