Citazione APA

Donahue, R. L., Hobbs, A. J., & Troch, F. R. (1980). Soil and water conservation for productivity and environmental protection. Prentice -Hall Inc.

Stile di citazione Chicago

Donahue, Roy L., Arthur J. Hobbs, e Frederick R. Troch. Soil and Water Conservation for Productivity and Environmental Protection. NewJerssey: Prentice -Hall Inc, 1980.

Citazione MLA

Donahue, Roy L., et al. Soil and Water Conservation for Productivity and Environmental Protection. Prentice -Hall Inc, 1980.