APA (7th ed.) Citation

Dann, J., & Dozois, G. R. (1989). Seaserpents! Ace Books.

Chicago Style (17th ed.) Citation

Dann, Jack, and Gardner R. Dozois. Seaserpents! New York: Ace Books, 1989.

MLA (9th ed.) Citation

Dann, Jack, and Gardner R. Dozois. Seaserpents! Ace Books, 1989.