APA (7th ed.) Citation

Ludlum, R. (1977). The Gemini contenders. Dell Pub.

Chicago Style (17th ed.) Citation

Ludlum, Robert. The Gemini Contenders. New York: Dell Pub, 1977.

MLA (9th ed.) Citation

Ludlum, Robert. The Gemini Contenders. Dell Pub, 1977.

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