APA (7th ed.) Citation

Booch, G., Jacobson, I., & Rumbaugh, J. (1999). The unified modeling language user guide. Addison-Wesley.

Chicago Style (17th ed.) Citation

Booch, Grady, Ivar Jacobson, and James Rumbaugh. The Unified Modeling Language User Guide. Boston: Addison-Wesley, 1999.

MLA (8th ed.) Citation

Booch, Grady, et al. The Unified Modeling Language User Guide. Addison-Wesley, 1999.