Cita APA

Freeman, E. 1., Robson, E., Sierra, K., & Bates, B. (2004). Head first design patterns (1. edition.). Beijing: O'Reilly.

Citación estilo Chicago

Freeman, Eric 1965-, Elisabeth Robson, Kathy Sierra, y Bert Bates. Head First Design Patterns. 1. edition. Beijing: O'Reilly, 2004.

Cita MLA

Freeman, Eric 1965-, Elisabeth Robson, Kathy Sierra, y Bert Bates. Head First Design Patterns. 1. edition. Beijing: O'Reilly, 2004.