Cita APA (7th ed.)

(2009). Ruby phrasebook: Essential code and commands / by Jason Clinton.

Cita Chicago (17th ed.)

Ruby Phrasebook: Essential Code and Commands / by Jason Clinton. 2009.

Cita MLA (9th ed.)

Ruby Phrasebook: Essential Code and Commands / by Jason Clinton. 2009.

Atenció: Aquestes cites poden no estar 100% correctes.