UNESCO (United Nations Educational Scientific and Cultural Organization). (1981). A systems approach to teaching and learning procedures: A guide for educators (2η έκδ., επαυξ., αναθ.). Unesco.
Chicago Style (17th ed.) CitationUNESCO (United Nations Educational Scientific and Cultural Organization). A Systems Approach to Teaching and Learning Procedures: A Guide for Educators. 2η έκδ., επαυξ., αναθ. Paris: Unesco, 1981.
MLA (8th ed.) CitationUNESCO (United Nations Educational Scientific and Cultural Organization). A Systems Approach to Teaching and Learning Procedures: A Guide for Educators. 2η έκδ., επαυξ., αναθ. Unesco, 1981.
Warning: These citations may not always be 100% accurate.
