APA (7th ed.) Citation

Hegeland, H. (1966). The multipler theory. A.M. Kelley.

Chicago Style (17th ed.) Citation

Hegeland, Hugo. The Multipler Theory. New York: A.M. Kelley, 1966.

MLA (9th ed.) Citation

Hegeland, Hugo. The Multipler Theory. A.M. Kelley, 1966.