Style de citation APA (7e éd.)

CLARK II, E. H., HAVERKAMP, J. A., & CHAPMAN, W. (1985). Eroding soils: The off-farm impacts. Th Conservation Foundation.

Style de citation Chicago (17e éd.)

CLARK II, Edwin H., Jenniver A. HAVERKAMP, et William CHAPMAN. Eroding Soils: The Off-farm Impacts. Washington: Th Conservation Foundation, 1985.

Style de citation MLA (9e éd.)

CLARK II, Edwin H., et al. Eroding Soils: The Off-farm Impacts. Th Conservation Foundation, 1985.