APA Style

Freeman, Eric, Robson, Elisabeth, Sierra, Kathy, Bates, Bert. (2004). Head first design patterns : a brain-friendly guide . Beijing: O\'Reilly.

Chicago Style

Freeman, Eric, Robson, Elisabeth, Sierra, Kathy, Bates, Bert. Head first design patterns : a brain-friendly guide. Beijing: O\'Reilly, 2004. Book.

MLA Style

Freeman, Eric, Robson, Elisabeth, Sierra, Kathy, Bates, Bert. Head first design patterns : a brain-friendly guide. Beijing: O\'Reilly, 2004. Book.

Turabian Style

Freeman, Eric, Robson, Elisabeth, Sierra, Kathy, Bates, Bert. Head first design patterns : a brain-friendly guide. Beijing: O\'Reilly, 2004. Book.