APA (7th ed.) Citation

Wittich, W. A., & Fowlkes, J. G. (1946). Audio-visual paths to learning: A comparison of 3 classroom methods of using educational sound films (1. ed.). Harper.

Chicago Style (17th ed.) Citation

Wittich, Walter A., and John G. Fowlkes. Audio-visual Paths to Learning: A Comparison of 3 Classroom Methods of Using Educational Sound Films. 1. ed. New York u.a: Harper, 1946.

MLA (9th ed.) Citation

Wittich, Walter A., and John G. Fowlkes. Audio-visual Paths to Learning: A Comparison of 3 Classroom Methods of Using Educational Sound Films. 1. ed. Harper, 1946.