Keller, E. A. (2008). Introduction to environmental geology (4th ed.). Pearson Prentice Hall.
Chicagoスタイル(17版)引用形式Keller, Edward A. Introduction to Environmental Geology. 4th ed. Upper Saddle River, N.J: Pearson Prentice Hall, 2008.
MLA(9版)引用形式Keller, Edward A. Introduction to Environmental Geology. 4th ed. Pearson Prentice Hall, 2008.
警告: この引用は必ずしも正確ではありません.