APA (7th ed.) Citation

St. Laurent, S., & Dumbill, E. (2009). Learning Rails. O'Reilly.

Chicago Style (17th ed.) Citation

St. Laurent, Simon, and Edd Dumbill. Learning Rails. Sebastopol, Calif.: O'Reilly, 2009.

MLA (9th ed.) Citation

St. Laurent, Simon, and Edd Dumbill. Learning Rails. O'Reilly, 2009.