Cita APA

Freeman, E., Robson, E., Sierra, K., & Bates, B. (2004). Head first design patterns (First edition.). [Massachusettes], Boston: Published.

Citación estilo Chicago

Freeman, Eric,, Elisabeth Robson, Kathy Sierra, y Bert Bates. Head First Design Patterns. First edition. [Massachusettes], Boston: Published, 2004.

Cita MLA

Freeman, Eric,, Elisabeth Robson, Kathy Sierra, y Bert Bates. Head First Design Patterns. First edition. [Massachusettes], Boston: Published, 2004.