APA (7th ed.) Citation

Van Vogt, A. E. (1966). The weapon makers. Ace Book.

Chicago Style (17th ed.) Citation

Van Vogt, A. E. The Weapon Makers. New York: Ace Book, 1966.

MLA (9th ed.) Citation

Van Vogt, A. E. The Weapon Makers. Ace Book, 1966.