Cita APA (7a ed.)

Alpert, S. R., Brown, K., & Woolf, B. (1998). The design patterns: Smalltalk companion. [S.n.].

Cita Chicago Style (17a ed.)

Alpert, Sherman R., Kyle Brown, y Bobby Woolf. The Design Patterns: Smalltalk Companion. Massachusetts: [S.n.], 1998.

Cita MLA (9a ed.)

Alpert, Sherman R., et al. The Design Patterns: Smalltalk Companion. [S.n.], 1998.