APA (7th ed.) Citation

Orr, W. I. (1978). The radio handbook (21st ed.). Editors & Engineers.

Chicago Style (17th ed.) Citation

Orr, William I. The Radio Handbook. 21st ed. Indianapolis, Indiana: Editors & Engineers, 1978.

MLA (9th ed.) Citation

Orr, William I. The Radio Handbook. 21st ed. Editors & Engineers, 1978.