Cita APA (7th ed.)

Bigelow, S. J., Fike, J. L., & Friend, G. E. (1991). Understanding telephone electronics (3a. ed.). Smas.

Cita Chicago (17th ed.)

Bigelow, Stephen J., John L. Fike, i George E. Friend. Understanding Telephone Electronics. 3a. ed. Indianápolis: Smas, 1991.

Cita MLA (9th ed.)

Bigelow, Stephen J., et al. Understanding Telephone Electronics. 3a. ed. Smas, 1991.