Cita APA (7th ed.)

Christopherson, R. W. (1995). Elemental geosystems: A foundation in physical geography. Prentice Hall.

Cita Chicago (17th ed.)

Christopherson, Robert W. Elemental Geosystems: A Foundation in Physical Geography. Englewood Cliffs, N.J.: Prentice Hall, 1995.

Cita MLA (8th ed.)

Christopherson, Robert W. Elemental Geosystems: A Foundation in Physical Geography. Prentice Hall, 1995.