APA引文

Bernard, D. (1977). Charging For Computer Services: Principles and Guidelines. Petrocell.

Chicago Edition Citation

Bernard, Dan. Charging For Computer Services: Principles and Guidelines. New York: Petrocell, 1977.

MLA引文

Bernard, Dan. Charging For Computer Services: Principles and Guidelines. Petrocell, 1977.

警告：這些引文格式不一定是100％准確.