Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (9a ed.)

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