Citazione Stile APA (7a Edizione)

Troeh, F. R., Hobbs, J. A., & Donahue, R. L. (1999). Soil and water conservation: Productivity and environmental protection (3a. ed.). Prentice Hall.

Citazione stile Chigago Style (17a edizione)

Troeh, Frederick R., J. Arthur Hobbs, e Roy L. Donahue. Soil and Water Conservation: Productivity and Environmental Protection. 3a. ed. Upper Saddle River: Prentice Hall, 1999.

Citatione MLA (9a ed.)

Troeh, Frederick R., et al. Soil and Water Conservation: Productivity and Environmental Protection. 3a. ed. Prentice Hall, 1999.