APA (7th ed.) Citation

Norton, A. M., & Norton, A. (1965). The X factor ([1st ed.].). Harcourt, Brace & World.

Chicago Style (17th ed.) Citation

Norton, Alice Mary, and Andre Norton. The X Factor. [1st ed.]. New York: Harcourt, Brace & World, 1965.

MLA (9th ed.) Citation

Norton, Alice Mary, and Andre Norton. The X Factor. [1st ed.]. Harcourt, Brace & World, 1965.