APA (7th ed.) Citation

Ullman, J. D., & Widom. (2002). A first course in database system. Prentice Hall.

Chicago Style (17th ed.) Citation

Ullman, Jeffrey D., and Widom. A First Course in Database System. Upper Saddle River, New Jersey: Prentice Hall, 2002.

MLA (8th ed.) Citation

Ullman, Jeffrey D., and Widom. A First Course in Database System. Prentice Hall, 2002.