APA (7th ed.) Citation

Baird, K. C. (2007). Ruby by example: Concepts and code (1st edition.). No Starch Press.

Chicago Style (17th ed.) Citation

Baird, Kevin C. Ruby by Example: Concepts and Code. 1st edition. San Francisco: No Starch Press, 2007.

MLA (9th ed.) Citation

Baird, Kevin C. Ruby by Example: Concepts and Code. 1st edition. No Starch Press, 2007.