APA (7th ed.) Citation

Zepler, E. E. (1949). The technique of radio design (2d ed., rev.). Wiley.

Chicago Style (17th ed.) Citation

Zepler, E. E. The Technique of Radio Design. 2d ed., rev. New York: Wiley, 1949.

MLA (9th ed.) Citation

Zepler, E. E. The Technique of Radio Design. 2d ed., rev. Wiley, 1949.