APA (7th ed.) Citation

Van Vogt, A. E. (1975). The secret galactics. Sidgwick & Jackson.

Chicago Style (17th ed.) Citation

Van Vogt, A. E. The Secret Galactics. London: Sidgwick & Jackson, 1975.

MLA (8th ed.) Citation

Van Vogt, A. E. The Secret Galactics. Sidgwick & Jackson, 1975.

Warning: These citations may not always be 100% accurate.