Cita APA (7th ed.)

Christopherson, R. W. (2001). Elemental geosystems (3rd ed.). Prentice Hall.

Cita Chicago (17th ed.)

Christopherson, Robert W. Elemental Geosystems. 3rd ed. Upper Saddle River, N.J: Prentice Hall, 2001.

Cita MLA (9th ed.)

Christopherson, Robert W. Elemental Geosystems. 3rd ed. Prentice Hall, 2001.