APA (7th ed.) Citation

Black, D. A., & Hansson, D. H. (2006). Ruby for Rails: Ruby techniques for Rails developers. Manning.

Chicago Style (17th ed.) Citation

Black, David A., and David Heinemeier Hansson. Ruby for Rails: Ruby Techniques for Rails Developers. Greenwich, CT: Manning, 2006.

MLA (9th ed.) Citation

Black, David A., and David Heinemeier Hansson. Ruby for Rails: Ruby Techniques for Rails Developers. Manning, 2006.