APA Edition Citation

Gamma, E. (2011). Design patterns: Elements of reusable object-oriented software. Pearson.

Chicago Edition Citation

Gamma, Erich. Design Patterns: Elements of Reusable Object-oriented Software. New Delhi: Pearson, 2011.

MLA Edition Citation

Gamma, Erich. Design Patterns: Elements of Reusable Object-oriented Software. Pearson, 2011.

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