APA (7th ed.) Citation

Darlton, C. (1971). The galactic riddle. Ace Books.

Chicago Style (17th ed.) Citation

Darlton, Clark. The Galactic Riddle. New York: Ace Books, 1971.

MLA (9th ed.) Citation

Darlton, Clark. The Galactic Riddle. Ace Books, 1971.

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