Christopherson, R. W. (1995). Elemental geosystems: A foundation in physical geography. Prentice Hall.
Chicagoスタイル(17版)引用形式Christopherson, Robert W. Elemental Geosystems: A Foundation in Physical Geography. Englewood Cliffs, N.J.: Prentice Hall, 1995.
MLA(8版)引用形式Christopherson, Robert W. Elemental Geosystems: A Foundation in Physical Geography. Prentice Hall, 1995.
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