Παραπομπή APA

Donahue, R. L., & Miller, R. W. (1997). Soils in our environment (Ed7.).

Παραπομπή Chicago Style

Donahue, Roy L., και Raymond W. Miller. Soils in Our Environment. Ed7. New Delhi, Prentice Hall of India, 1997.

Παραπομπή MLA

Donahue, Roy L., και Raymond W. Miller. Soils in Our Environment. Ed7. 1997.