Παραπομπή σε μορφή APA (7η εκδ.)

United Nations Educational, Scientific and Cultural Organization. (1981). A systems approach to teaching and learning procedures: A guide for educators (2nd rev. exp. ed.). Unesco Press.

Παραπομπή σε μορφή Chicago (17η εκδ.)

United Nations Educational, Scientific and Cultural Organization. A Systems Approach to Teaching and Learning Procedures: A Guide for Educators. 2nd rev. exp. ed. Paris: Unesco Press, 1981.

Παραπομπή σε μορφή MLA (8th εκδ.)

United Nations Educational, Scientific and Cultural Organization. A Systems Approach to Teaching and Learning Procedures: A Guide for Educators. 2nd rev. exp. ed. Unesco Press, 1981.