Cita APA (7th ed.)

Winterbotham, F. W. (1975). The Ultra secret. Dell Publishing Co.

Cita Chicago (17th ed.)

Winterbotham, F. W. The Ultra Secret. New York: Dell Publishing Co, 1975.

Cita MLA (9th ed.)

Winterbotham, F. W. The Ultra Secret. Dell Publishing Co, 1975.