Cita APA (7th ed.)

Evans, H. E. (1968). Life on a little-known planet ([1st ed.].). Dutton.

Cita Chicago (17th ed.)

Evans, Howard Ensign. Life on a Little-known Planet. [1st ed.]. New York: Dutton, 1968.

Cita MLA (9th ed.)

Evans, Howard Ensign. Life on a Little-known Planet. [1st ed.]. Dutton, 1968.