APA-referens

Ullman, J. D. (1995). Principles of database systems (2.). Galgotia Publications.

Chicago-stil citat

Ullman, Jeffrey D. Principles of Database Systems. 2. New Delhi: Galgotia Publications, 1995.

MLA-referens

Ullman, Jeffrey D. Principles of Database Systems. 2. Galgotia Publications, 1995.