United Nations Educational Scientific and Cultural Organizations. (1965). Sourcebook for geography teaching. Longmans, Green & Co.
Chicago-Zitierstil (17. Ausg.)United Nations Educational Scientific and Cultural Organizations. Sourcebook for Geography Teaching. Paris: Longmans, Green & Co, 1965.
MLA-Zitierstil (9. Ausg.)United Nations Educational Scientific and Cultural Organizations. Sourcebook for Geography Teaching. Longmans, Green & Co, 1965.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.