APA (7th ed.) Citation

Wittich, W. A. (1967). Audiovisual materials: Their nature and use (4th ed.). Harper & Row.

Chicago Style (17th ed.) Citation

Wittich, Walter Arno. Audiovisual Materials: Their Nature and Use. 4th ed. New York: Harper & Row, 1967.

MLA (9th ed.) Citation

Wittich, Walter Arno. Audiovisual Materials: Their Nature and Use. 4th ed. Harper & Row, 1967.