United Nations Educational Scientific Cultural Organization & Graves, N. J. (1982). New Unesco sourcebook for geography teaching. Longman/Unesco Press.
Παραπομπή σε μορφή Chicago (17η εκδ.)United Nations Educational Scientific Cultural Organization και Norman J. Graves. New Unesco Sourcebook for Geography Teaching. London: Longman/Unesco Press, 1982.
Παραπομπή σε μορφή MLA (9th εκδ.)United Nations Educational Scientific Cultural Organization και Norman J. Graves. New Unesco Sourcebook for Geography Teaching. Longman/Unesco Press, 1982.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.