APA (7th ed.) Citation

Blackstock, P. W., & Schaf, F. L. (1978). Intelligence, espionage, counterespionage and covert operations: A guide to information sources. Gale Research Co.

Chicago Style (17th ed.) Citation

Blackstock, Paul W., and Frank L. Schaf. Intelligence, Espionage, Counterespionage and Covert Operations: A Guide to Information Sources. Detroit, Mich: Gale Research Co, 1978.

MLA (9th ed.) Citation

Blackstock, Paul W., and Frank L. Schaf. Intelligence, Espionage, Counterespionage and Covert Operations: A Guide to Information Sources. Gale Research Co, 1978.