APA ציטוט

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

Chicago Style (17th ed.) Citation

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

ציטוט MLA

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