Spaulding, H. F. (1952). Audio-visual research: Report to the 1952 audio-visual workshop. National Council of Churches.
Citace podle Chicago (17th ed.)Spaulding, Helen F. Audio-visual Research: Report to the 1952 Audio-visual Workshop. Chicago: National Council of Churches, 1952.
Citace podle MLA (8th ed.)Spaulding, Helen F. Audio-visual Research: Report to the 1952 Audio-visual Workshop. National Council of Churches, 1952.
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