Congress on the Integration of Science Teaching Droujba, Bulgaria, & International Council of Scientific Unions. Inter-Union Commission on Science Teaching. (1968). Congrès sur l'intégration des enseignements scientifiques =: Congress on the Integration of Science Teaching. Droujba (Bulgarie), 11-19 septembre 1968. CIES.
Chicago Style (17th ed.) CitationCongress on the Integration of Science Teaching Droujba, Bulgaria, and International Council of Scientific Unions. Inter-Union Commission on Science Teaching. Congrès Sur L'intégration Des Enseignements Scientifiques =: Congress on the Integration of Science Teaching. Droujba (Bulgarie), 11-19 Septembre 1968. Paris: CIES, 1968.
MLA (9th ed.) CitationCongress on the Integration of Science Teaching Droujba, Bulgaria, and International Council of Scientific Unions. Inter-Union Commission on Science Teaching. Congrès Sur L'intégration Des Enseignements Scientifiques =: Congress on the Integration of Science Teaching. Droujba (Bulgarie), 11-19 Septembre 1968. CIES, 1968.