Cita APA (7a ed.)

Roddy, D., & Coolen, J. (1981). Electronic communications (2nd ed.). Reston Publishing Company.

Cita Chicago Style (17a ed.)

Roddy, Dennis, y John Coolen. Electronic Communications. 2nd ed. Reston, Virginia: Reston Publishing Company, 1981.

Cita MLA (9a ed.)

Roddy, Dennis, y John Coolen. Electronic Communications. 2nd ed. Reston Publishing Company, 1981.