APA (7th ed.) Citation

Frieder, O., Frieder, G., & Grossman, D. (2013). Computer Science Programming Basics in Ruby (1st edition.). O'Reilly Media, Inc..

Chicago Style (17th ed.) Citation

Frieder, Ophir, Gideon Frieder, and David Grossman. Computer Science Programming Basics in Ruby. 1st edition. O'Reilly Media, Inc., 2013.

MLA (9th ed.) Citation

Frieder, Ophir, et al. Computer Science Programming Basics in Ruby. 1st edition. O'Reilly Media, Inc., 2013.