Freeman, E., Robso, E., Sierra, K., & Bates, B. (2004). Head first design patterns: A brain-friendly guide (First edition.). Estados Unidos: O'Reilly Media, Incorporated.
Chicago Style CitationFreeman, Eric,, Elisabeth Robso, Kathy Sierra, and Bert Bates. Head First Design Patterns: A Brain-friendly Guide. First edition. Estados Unidos: O'Reilly Media, Incorporated, 2004.
MLA CitationFreeman, Eric,, Elisabeth Robso, Kathy Sierra, and Bert Bates. Head First Design Patterns: A Brain-friendly Guide. First edition. Estados Unidos: O'Reilly Media, Incorporated, 2004.
Warning: These citations may not always be 100% accurate.