Cita APA (7th ed.)

Gamma, E. (1995). Design patterns: Elements of reusable object-oriented software. Addison-Wesley ; Pearson Education.

Cita Chicago (17th ed.)

Gamma, Erich. Design Patterns: Elements of Reusable Object-oriented Software. Reading, Mass. : New Delhi: Addison-Wesley ; Pearson Education, 1995.

Cita MLA (8th ed.)

Gamma, Erich. Design Patterns: Elements of Reusable Object-oriented Software. Addison-Wesley ; Pearson Education, 1995.