APA (7th ed.) Citation

Olsen, R. (2011). Eloquent Ruby (1st edition.). Addison-Wesley Professional.

Chicago Style (17th ed.) Citation

Olsen, Russ. Eloquent Ruby. 1st edition. Addison-Wesley Professional, 2011.

MLA (9th ed.) Citation

Olsen, Russ. Eloquent Ruby. 1st edition. Addison-Wesley Professional, 2011.

Warning: These citations may not always be 100% accurate.