APA (7th ed.) Citation

Warmer, J. B., & Kleppe. (1999). The object constraint language: Precise modeling with UML. Addison-Wesley.

Chicago Style (17th ed.) Citation

Warmer, Jos B., and Kleppe. The Object Constraint Language: Precise Modeling with UML. Reading, Massachusetts: Addison-Wesley, 1999.

MLA (8th ed.) Citation

Warmer, Jos B., and Kleppe. The Object Constraint Language: Precise Modeling with UML. Addison-Wesley, 1999.