Career Information Center. (1979). Engineering, science and technology. Butterick Publishing.
Cita Chicago (17th ed.)Career Information Center. Engineering, Science and Technology. New York: Butterick Publishing, 1979.
Cita MLA (9th ed.)Career Information Center. Engineering, Science and Technology. Butterick Publishing, 1979.
Atenció: Aquestes cites poden no estar 100% correctes.