APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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