APA (7th ed.) Citation

Carlson, L., & Richardson, L. (2012). Ruby. Receptury (1st edition.). Helion.

Chicago Style (17th ed.) Citation

Carlson, Lucas, and Leonard Richardson. Ruby. Receptury. 1st edition. Helion, 2012.

MLA (9th ed.) Citation

Carlson, Lucas, and Leonard Richardson. Ruby. Receptury. 1st edition. Helion, 2012.

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