APA (7th ed.) Citation

Van Vogt, A. E., & Hull, E. M. (1970). Out of the unknown. NEL.

Chicago Style (17th ed.) Citation

Van Vogt, Alfred Elton, and Edna Mayne Hull. Out of the Unknown. London: NEL, 1970.

MLA (9th ed.) Citation

Van Vogt, Alfred Elton, and Edna Mayne Hull. Out of the Unknown. NEL, 1970.