APA Edition Citation

Mckown, H. C., & Roberts , A. B. (1949). Audio visual aids to instruction (3rd ed.).

Chicago Edition Citation

Mckown, Harry C., and Alwin B. Roberts. Audio Visual Aids to Instruction. 3rd ed. 1949.

MLA Edition Citation

Mckown, Harry C., and Alwin B. Roberts. Audio Visual Aids to Instruction. 3rd ed. 1949.

Advarsel: Disse citationer er muligvist ikke 100% nøjagtige.