APA (7th ed.) Citation

Cooper, E. (1969). Sea horse in the sky: A science fiction novel (Book club edition.). Putnam.

Chicago Style (17th ed.) Citation

Cooper, Edmund. Sea Horse in the Sky: A Science Fiction Novel. Book club edition. New York: Putnam, 1969.

MLA (9th ed.) Citation

Cooper, Edmund. Sea Horse in the Sky: A Science Fiction Novel. Book club edition. Putnam, 1969.

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