Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (9a ed.)

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