APA (7th ed.) Citation

Gamble. (2013). Beginning Rails 4 (3.). Apress.

Chicago Style (17th ed.) Citation

Gamble. Beginning Rails 4. 3. Apress, 2013.

MLA (8th ed.) Citation

Gamble. Beginning Rails 4. 3. Apress, 2013.

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