CLARK II, E. H., HAVERKAMP, J. A., & CHAPMAN, W. (1985). Eroding soils: The off-farm impacts. Th Conservation Foundation.
Chicago-čujuhus (17. p.)CLARK II, Edwin H., Jenniver A. HAVERKAMP, juo William CHAPMAN. Eroding Soils: The Off-farm Impacts. Washington: Th Conservation Foundation, 1985.
MLA-čujuhus (9. p.)CLARK II, Edwin H., et al. Eroding Soils: The Off-farm Impacts. Th Conservation Foundation, 1985.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.