APA引文

Ullman, J. D. (1982). Principles of database systems. Rockville, Md: Computer Science Press.

Trích dẫn kiểu Chicago

Ullman, Jeffrey D. Principles of Database Systems. Rockville, Md: Computer Science Press, 1982.

MLA引文

Ullman, Jeffrey D. Principles of Database Systems. Rockville, Md: Computer Science Press, 1982.

警告：這些引文格式不一定是100％准確.