Christopherson, R. W. (2010). Elemental geosystems (Sixth edition.). Pearson Prentice Hall.
Chicagoスタイル(17版)引用形式Christopherson, Robert W. Elemental Geosystems. Sixth edition. Upper Saddle River, New Jersey: Pearson Prentice Hall, 2010.
MLA(9版)引用形式Christopherson, Robert W. Elemental Geosystems. Sixth edition. Pearson Prentice Hall, 2010.
警告: この引用は必ずしも正確ではありません.