APA (7th ed.) Citation

Ullman, J. D. Principles of database and knowledge - base systems. Computer Science Press.

Chicago Style (17th ed.) Citation

Ullman, Jeffrey D. Principles of Database and Knowledge - Base Systems. Rockville: Computer Science Press.

MLA (8th ed.) Citation

Ullman, Jeffrey D. Principles of Database and Knowledge - Base Systems. Computer Science Press.

Warning: These citations may not always be 100% accurate.