Unesco. (1965). Source book fot geography teaching. Longmans.
Cita Chicago Style (17a ed.)Unesco. Source Book Fot Geography Teaching. London: Longmans, 1965.
Cita MLA (9a ed.)Unesco. Source Book Fot Geography Teaching. Longmans, 1965.
Precaución: Estas citas no son 100% exactas.