International Council for Educational Media, Educational Foundation for Visual Aids (London, England), & Jongbloed, H. J. (1976). Guidelines for the establishment and management of audio-visual services in advanced and developing countries: A report under contract with UNESCO ... International Council for Educational Media.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)International Council for Educational Media, England) Educational Foundation for Visual Aids (London, و Harry J.L Jongbloed. Guidelines for the Establishment and Management of Audio-visual Services in Advanced and Developing Countries: A Report Under Contract with UNESCO ... [Paris?]: International Council for Educational Media, 1976.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)International Council for Educational Media, et al. Guidelines for the Establishment and Management of Audio-visual Services in Advanced and Developing Countries: A Report Under Contract with UNESCO ... International Council for Educational Media, 1976.