APA Citatie

Ullman, J. D., & Korth, H. F. (1988). Principles of database and knowledge-base systems. Rockville, Md: Computer Science Press.

Chicago Style citaat

Ullman, Jeffrey D., en Henry F. Korth. Principles of Database and Knowledge-base Systems. Rockville, Md: Computer Science Press, 1988.

MLA citatie

Ullman, Jeffrey D., en Henry F. Korth. Principles of Database and Knowledge-base Systems. Rockville, Md: Computer Science Press, 1988.

Let op: Deze citaties zijn niet altijd 100% accuraat.