APA (7th ed.) Citation

Asimov, I. (1976). To the ends of the universe (Rev. ed.). Walker.

Chicago Style (17th ed.) Citation

Asimov, Isaac. To the Ends of the Universe. Rev. ed. New York: Walker, 1976.

MLA (9th ed.) Citation

Asimov, Isaac. To the Ends of the Universe. Rev. ed. Walker, 1976.