APA (7th ed.) Citation

Mahr, K. (1975). Checkmate: Universe (American ed.). Ace Books.

Chicago Style (17th ed.) Citation

Mahr, Kurt. Checkmate: Universe. American ed. New York: Ace Books, 1975.

MLA (8th ed.) Citation

Mahr, Kurt. Checkmate: Universe. American ed. Ace Books, 1975.

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