APA (7th ed.) Citation

Kaufman, M. (1957). Radio operator's license Q & A manual (6th ed.). Rider.

Chicago Style (17th ed.) Citation

Kaufman, Milton. Radio Operator's License Q & A Manual. 6th ed. New York: Rider, 1957.

MLA (9th ed.) Citation

Kaufman, Milton. Radio Operator's License Q & A Manual. 6th ed. Rider, 1957.