APA aipamena

Christopherson, R. W. (2013). Elemental geosystems (7th edition.). Pearson.

Chicago Style aipamena

Christopherson, Robert W. Elemental Geosystems. 7th edition. London: Pearson, 2013.

MLA aipamena

Christopherson, Robert W. Elemental Geosystems. 7th edition. Pearson, 2013.