Tohutoro APA (7th ed.)

Wittich, W. A. (1953). Audio-visual materials: Their nature and use. Harper and Brothers.

Tohutoru Kātū Chicago

Wittich, Walter Arno. Audio-visual Materials: Their Nature and Use. Harper and Brothers, 1953.

Tohutoro MLA

Wittich, Walter Arno. Audio-visual Materials: Their Nature and Use. Harper and Brothers, 1953.

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