APA (7th ed.) Citation

Safari Tech Books Online & Alhir, S. S. A. (2003). Learning UML. O'Reilly Media Incorporated.

Chicago Style (17th ed.) Citation

Safari Tech Books Online and Sinan Si Author Alhir. Learning UML. [Place of publication not identified]: O'Reilly Media Incorporated, 2003.

MLA (9th ed.) Citation

Safari Tech Books Online and Sinan Si Author Alhir. Learning UML. O'Reilly Media Incorporated, 2003.