APA-referens

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

Chicago-stil citat

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

MLA-referens

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

Varning: dessa hänvisningar är inte alltid fullständigt riktiga.