Tokheim, R. L. (1990). Digital electronics (4th ed.). Glencoe.
Cita Chicago (17th ed.)Tokheim, Roger L. Digital Electronics. 4th ed. New York, N.Y.: Glencoe, 1990.
Cita MLA (9th ed.)Tokheim, Roger L. Digital Electronics. 4th ed. Glencoe, 1990.
Atenció: Aquestes cites poden no estar 100% correctes.