APA (7th ed.) Citation

Spiro, E. (1971). Gehlen: Spy of the century. Random House.

Chicago Style (17th ed.) Citation

Spiro, Edward. Gehlen: Spy of the Century. New York: Random House, 1971.

MLA (9th ed.) Citation

Spiro, Edward. Gehlen: Spy of the Century. Random House, 1971.