APA aipamena

Christopherson, R. W. (2010). Study guide for elemental geosystems (6th ed.). Pearson Prentice Hall.

Chicago Style aipamena

Christopherson, Robert W. Study Guide for Elemental Geosystems. 6th ed. Upper Saddle River, N.J: Pearson Prentice Hall, 2010.

MLA aipamena

Christopherson, Robert W. Study Guide for Elemental Geosystems. 6th ed. Pearson Prentice Hall, 2010.