McGraw-Hill Book Company, Birnes, W. J., & Hayfield, N. (1985). McGraw-Hill personal computer programming encyclopedia: Languages and operating systems. McGraw-Hill.
Cita Chicago (17th ed.)McGraw-Hill Book Company, William J. Birnes, i Nancy Hayfield. McGraw-Hill Personal Computer Programming Encyclopedia: Languages and Operating Systems. New York: McGraw-Hill, 1985.
Cita MLA (9th ed.)McGraw-Hill Book Company, et al. McGraw-Hill Personal Computer Programming Encyclopedia: Languages and Operating Systems. McGraw-Hill, 1985.
Atenció: Aquestes cites poden no estar 100% correctes.