Παραπομπή σε μορφή APA (7η εκδ.)

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.

Παραπομπή σε μορφή Chicago (17η εκδ.)

UNESCO (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.

Παραπομπή σε μορφή MLA (8th εκδ.)

UNESCO (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.