Winston, B. J. (1991). Geography: Our country and our world. Scott, Foresman and Co..
Tohutoru Kātū Chicago (17th ed.)Winston, Barbara J. Geography: Our Country and Our World. Glenview: Scott, Foresman and Co., 1991.
Tohutoro MLA (9th ed.)Winston, Barbara J. Geography: Our Country and Our World. Scott, Foresman and Co., 1991.
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