APA (7th ed.) Citation

Eddings, D. (1990). The ruby knight. Grafton Books.

Chicago Style (17th ed.) Citation

Eddings, David. The Ruby Knight. [London]: Grafton Books, 1990.

MLA (9th ed.) Citation

Eddings, David. The Ruby Knight. Grafton Books, 1990.

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