Lua APA (7ú heag.)

Não informado. (1902). Journal of Geography. National Council for Geographic Education.

Lua i Stíl Chicago (17ú heag.)

Não informado. Journal of Geography. Indiana, Pa: National Council for Geographic Education, 1902.

Lua MLA (8ú heag.)

Não informado. Journal of Geography. National Council for Geographic Education, 1902.

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