Cita APA (7th ed.)

(2001). Programming Ruby: The pragmatic programmer's guide / David Thomas, Andrew Hunt.

Cita Chicago (17th ed.)

Programming Ruby: The Pragmatic Programmer's Guide / David Thomas, Andrew Hunt. 2001.

Cita MLA (9th ed.)

Programming Ruby: The Pragmatic Programmer's Guide / David Thomas, Andrew Hunt. 2001.

Atenció: Aquestes cites poden no estar 100% correctes.