Citace podle APA

Coppen, H. (1972). Survey of British research in audio-visual aids, 1945-1971. National Council for Audio Visual Aids in Education.

Styl Chicago

Coppen, Helen. Survey of British Research in Audio-visual Aids, 1945-1971. London: National Council for Audio Visual Aids in Education, 1972.

Citace podle MLA

Coppen, Helen. Survey of British Research in Audio-visual Aids, 1945-1971. National Council for Audio Visual Aids in Education, 1972.

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