Cita APA (7th ed.)

Gamma, E. (2020). Design Patterns (13th.). Pearson.

Cita Chicago (17th ed.)

Gamma, Erich. Design Patterns. 13th. New Delhi: Pearson, 2020.

Cita MLA (9th ed.)

Gamma, Erich. Design Patterns. 13th. Pearson, 2020.