Spaulding, H. F. (1950). Report on research in audio-visual aids to education. International Council of Religious Education.
Chicago-Zitierstil (17. Ausg.)Spaulding, Helen F. Report on Research in Audio-visual Aids to Education. Chicago: International Council of Religious Education, 1950.
MLA-Zitierstil (8. Ausg.)Spaulding, Helen F. Report on Research in Audio-visual Aids to Education. International Council of Religious Education, 1950.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.