Cita APA (7th ed.)

Gamma, E. (1995). Design patterns: Elements of reusable object-oriented software / Erich Gamma ... [et al]. Addison-Wesley.

Cita Chicago (17th ed.)

Gamma, Erich. Design Patterns: Elements of Reusable Object-oriented Software / Erich Gamma ... [et Al]. Reading, Mass: Addison-Wesley, 1995.

Cita MLA (9th ed.)

Gamma, Erich. Design Patterns: Elements of Reusable Object-oriented Software / Erich Gamma ... [et Al]. Addison-Wesley, 1995.