APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

Wittich, Walter A., and J. G. Fowlkes. Audio-visual Paths to Learning: A Comparison of Three Classroom Methods of Using Educational Sound Films. New York, London: Harper & Brothers, 1946.

MLA (9th ed.) Citation

Wittich, Walter A., and J. G. Fowlkes. Audio-visual Paths to Learning: A Comparison of Three Classroom Methods of Using Educational Sound Films. Harper & Brothers, 1946.