National Council for Geographic Education, National Council of Geography Teachers (U.S.), & American Geographical Society of New York. The Journal of geography. National Council for Geographic Education.
Чикаго-гийн эшлэл (17 дахь хэвлэлт)National Council for Geographic Education, National Council of Geography Teachers (U.S.), ба American Geographical Society of New York. The Journal of Geography. [Indiana, PA, etc.]: National Council for Geographic Education.
MLA -ийн эшлэл (9 дэх хэвлэлт)National Council for Geographic Education, et al. The Journal of Geography. National Council for Geographic Education.
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