APA (7th ed.) Citation

Asimov, I. (1967). The double planet (Rev. ed.). Abelard-Schuman.

Chicago Style (17th ed.) Citation

Asimov, Isaac. The Double Planet. Rev. ed. London, New York: Abelard-Schuman, 1967.

MLA (8th ed.) Citation

Asimov, Isaac. The Double Planet. Rev. ed. Abelard-Schuman, 1967.