Cita APA (7th ed.)

Christopherson, R. W. (1998). Elemental geosystems (2nd ed.). Prentice Hall.

Cita Chicago (17th ed.)

Christopherson, Robert W. Elemental Geosystems. 2nd ed. Upper Saddle River, N.J: Prentice Hall, 1998.

Cita MLA (9th ed.)

Christopherson, Robert W. Elemental Geosystems. 2nd ed. Prentice Hall, 1998.