Gamma, E. (2003). Design patterns (27. print.). Boston, Mass. [u.a.].
Chicago Style CitationGamma, Erich. Design Patterns. 27. print. Boston, Mass. [u.a.], 2003.
Deismireacht MLAGamma, Erich. Design Patterns. 27. print. Boston, Mass. [u.a.], 2003.
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