APA (7th ed.) Citation

Berube, D. (2007). Practical Ruby Gems. Apress.

Chicago Style (17th ed.) Citation

Berube, David. Practical Ruby Gems. Berkeley, CA: Apress, 2007.

MLA (8th ed.) Citation

Berube, David. Practical Ruby Gems. Apress, 2007.

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