APA (7th ed.) Citation

Cooper, P. (2009). Beginning Ruby: From novice to professional : [an instructional guide to the Ruby programming language ; now covers Ruby 1.9] (2. ed.). Apress.

Chicago Style (17th ed.) Citation

Cooper, Peter. Beginning Ruby: From Novice to Professional : [an Instructional Guide to the Ruby Programming Language ; Now Covers Ruby 1.9]. 2. ed. Berkeley, Calif: Apress, 2009.

MLA (9th ed.) Citation

Cooper, Peter. Beginning Ruby: From Novice to Professional : [an Instructional Guide to the Ruby Programming Language ; Now Covers Ruby 1.9]. 2. ed. Apress, 2009.