APA (7th ed.) Citation

Van Iten, R. J. (1970). The problem of universals. Appleton-Century-Crofts.

Chicago Style (17th ed.) Citation

Van Iten, Richard J. The Problem of Universals. New York: Appleton-Century-Crofts, 1970.

MLA (9th ed.) Citation

Van Iten, Richard J. The Problem of Universals. Appleton-Century-Crofts, 1970.