Gamma, E. (2020). Design Patterns (13th.). Pearson.
Lua i Stíl Chicago (17ú heag.)Gamma, Erich. Design Patterns. 13th. New Delhi: Pearson, 2020.
Lua MLA (9ú heag.)Gamma, Erich. Design Patterns. 13th. Pearson, 2020.
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