APA (7th ed.) Zitazioa

Blaikie, P., .Brookfield, H. C., Allen, B., Crittenden, R., & Clarke, W. (1987). Land degradation and society. Methuen.

Chicago Style (17th ed.) Zitazioa

Blaikie, Piers, H. C. .Brookfield, Bryant Allen, Robert Crittenden, eta William Clarke. Land Degradation and Society. London ; New York: Methuen, 1987.

MLA (9th ed.) Zitazioa

Blaikie, Piers, et al. Land Degradation and Society. Methuen, 1987.