APA引文

Haag, S. (2006). Information systems essentials. Boston: McGraw-Hill.

Trích dẫn kiểu Chicago

Haag, Stephen. Information Systems Essentials. Boston: McGraw-Hill, 2006.

MLA引文

Haag, Stephen. Information Systems Essentials. Boston: McGraw-Hill, 2006.

警告：這些引文格式不一定是100％准確.