APA (7th ed.) Citation

Eddings, D. (1991). The ruby knight (1st U.S. mass market ed.). Del Ray.

Chicago Style (17th ed.) Citation

Eddings, David. The Ruby Knight. 1st U.S. mass market ed. New York: Del Ray, 1991.

MLA (8th ed.) Citation

Eddings, David. The Ruby Knight. 1st U.S. mass market ed. Del Ray, 1991.

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