Cita APA (7a ed.)
Gamma, E., Helm, R., Johnson, R., & Vlissides, J. (1994). Design Patterns. Elements of Reusable Object-Oriented Software. Addison Wesley.
Cita Chicago Style (17a ed.)
Gamma, Erich, Richard Helm, Ralph Johnson, y John Vlissides. Design Patterns. Elements of Reusable Object-Oriented Software. Boston: Addison Wesley, 1994.
Cita MLA (9a ed.)
Gamma, Erich, et al. Design Patterns. Elements of Reusable Object-Oriented Software. Addison Wesley, 1994.
Precaución: Estas citas no son 100% exactas.