APA Citation

Gamma, E. (2003). Design patterns (27. print.). Boston, Mass. [u.a.].

Chicago Style Citation

Gamma, Erich. Design Patterns. 27. print. Boston, Mass. [u.a.], 2003.

MLA Citation

Gamma, Erich. Design Patterns. 27. print. Boston, Mass. [u.a.], 2003.

Warning: These citations may not always be 100% accurate.