APA (7th ed.) Citation

O'Toole, G. J. A. (1988). The encyclopedia of American intelligence and espionage: From the Revolutionary War to the present. Facts on File.

Chicago Style (17th ed.) Citation

O'Toole, G. J. A. The Encyclopedia of American Intelligence and Espionage: From the Revolutionary War to the Present. New York, N.Y.: Facts on File, 1988.

MLA (8th ed.) Citation

O'Toole, G. J. A. The Encyclopedia of American Intelligence and Espionage: From the Revolutionary War to the Present. Facts on File, 1988.