APA (7th ed.) Citation

Evans, H. E. (1968). Life on a little-known planet ([First edition].). Dutton.

Chicago Style (17th ed.) Citation

Evans, Howard Ensign. Life on a Little-known Planet. [First edition]. New York: Dutton, 1968.

MLA (9th ed.) Citation

Evans, Howard Ensign. Life on a Little-known Planet. [First edition]. Dutton, 1968.