APA (7th ed.) Citation

Greenfield, T. A. (1989). Radio: A reference guide. Greenwood Pr.

Chicago Style (17th ed.) Citation

Greenfield, Thomas A. Radio: A Reference Guide. New York u.a: Greenwood Pr, 1989.

MLA (9th ed.) Citation

Greenfield, Thomas A. Radio: A Reference Guide. Greenwood Pr, 1989.