Cita APA

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

Citación estilo Chicago

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

Cita MLA

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

Warning: These citations may not always be 100% accurate.