Davis & Kennedy. (1992). Electronic Communication System (4th ed.). McGraw Hill International Editions.
Cita Chicago (17th ed.)Davis i Kennedy. Electronic Communication System. 4th ed. McGraw Hill International Editions, 1992.
Cita MLA (9th ed.)Davis i Kennedy. Electronic Communication System. 4th ed. McGraw Hill International Editions, 1992.
Atenció: Aquestes cites poden no estar 100% correctes.