APA (7th ed.) Citation

Ullman, L. E. (2008). Ruby. Peachpit Press ; Pearson Education [distributor].

Chicago Style (17th ed.) Citation

Ullman, Larry E. Ruby. Berkeley, Calif. : London: Peachpit Press ; Pearson Education [distributor], 2008.

MLA (8th ed.) Citation

Ullman, Larry E. Ruby. Peachpit Press ; Pearson Education [distributor], 2008.

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