APA (7th ed.) Citation

Fitzgerald, M. (2012). Ruby: Wprowadzenie. Helion.

Chicago Style (17th ed.) Citation

Fitzgerald, Michael. Ruby: Wprowadzenie. [Gliwice?]: Helion, 2012.

MLA (8th ed.) Citation

Fitzgerald, Michael. Ruby: Wprowadzenie. Helion, 2012.

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