Cita APA (7a ed.)

Unión Geográfica Internacional. Commision on the Teaching of Geography. contribuidor. (1967). UNESCO source book for geography teaching ([3rd impression].). Longmans.

Cita Chicago Style (17a ed.)

Unión Geográfica Internacional. Commision on the Teaching of Geography. contribuidor. UNESCO Source Book for Geography Teaching. [3rd impression]. London: Longmans, 1967.

Cita MLA (9a ed.)

Unión Geográfica Internacional. Commision on the Teaching of Geography. contribuidor. UNESCO Source Book for Geography Teaching. [3rd impression]. Longmans, 1967.