APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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

Warning: These citations may not always be 100% accurate.