Christopherson, R. W. (1994). Applied physical geography: Geosystems in the laboratory. Macmillan.
Chicago-čujuhus (17. p.)Christopherson, Robert W. Applied Physical Geography: Geosystems in the Laboratory. New York: Macmillan, 1994.
MLA-čujuhus (9. p.)Christopherson, Robert W. Applied Physical Geography: Geosystems in the Laboratory. Macmillan, 1994.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.