APA (7th ed.) Citation

Kaufman, M. (1968). Radio operator's license Q & A manual (7th ed.). National Book Store.

Chicago Style (17th ed.) Citation

Kaufman, Milton. Radio Operator's License Q & A Manual. 7th ed. [Manila: National Book Store, 1968.

MLA (9th ed.) Citation

Kaufman, Milton. Radio Operator's License Q & A Manual. 7th ed. National Book Store, 1968.