APA (7th ed.) Citation

(2007). Ruby: Pocket reference ; [a quick guide to Ruby] (1. ed.). O'Reilly.

Chicago Style (17th ed.) Citation

Ruby: Pocket Reference ; [a Quick Guide to Ruby]. 1. ed. Beijing [u.a.]: O'Reilly, 2007.

MLA (9th ed.) Citation

Ruby: Pocket Reference ; [a Quick Guide to Ruby]. 1. ed. O'Reilly, 2007.