Freeman, E. 1. (2004). Head First design patterns. Sebastopol, CA: O'Reilly.
Chicago Style CitationFreeman, Eric 1965-. Head First Design Patterns. Sebastopol, CA: O'Reilly, 2004.
MLA CitationFreeman, Eric 1965-. Head First Design Patterns. Sebastopol, CA: O'Reilly, 2004.
Warning: These citations may not always be 100% accurate.