Cita APA (7th ed.)

Ford, J. L. (2008). Ruby programming for the absolute beginner. Thomson Course Technology PTR.

Cita Chicago (17th ed.)

Ford, Jerry Lee. Ruby Programming for the Absolute Beginner. Boston: Thomson Course Technology PTR, 2008.

Cita MLA (9th ed.)

Ford, Jerry Lee. Ruby Programming for the Absolute Beginner. Thomson Course Technology PTR, 2008.