Cita APA (7a ed.)

Alpert, S. R., Brown, K., Woolf, B., & Beck, K. (1998). The design patterns Smalltalk companion. Addison-Wesley.

Cita Chicago Style (17a ed.)

Alpert, Sherman R., Kyle Brown, Bobby Woolf, y Kent Beck. The Design Patterns Smalltalk Companion. Reading, Mass.: Addison-Wesley, 1998.

Cita MLA (9a ed.)

Alpert, Sherman R., et al. The Design Patterns Smalltalk Companion. Addison-Wesley, 1998.