Spaulding, H. F. (1952). Audio-visual research: Report to the 1952 audio-visual workshop. National Council of Churches.
Chicago-referens (17:e uppl.)Spaulding, Helen F. Audio-visual Research: Report to the 1952 Audio-visual Workshop. Chicago: National Council of Churches, 1952.
MLA-referens (8:e uppl.)Spaulding, Helen F. Audio-visual Research: Report to the 1952 Audio-visual Workshop. National Council of Churches, 1952.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.