APA (7th ed.) Citation

Norton, A. (1961). Daybreak, 2250 A.D. ([First mass market paperback separate edition].). Ace Books.

Chicago Style (17th ed.) Citation

Norton, Andre. Daybreak, 2250 A.D. [First mass market paperback separate edition]. New York: Ace Books, 1961.

MLA (9th ed.) Citation

Norton, Andre. Daybreak, 2250 A.D. [First mass market paperback separate edition]. Ace Books, 1961.