APA aipamena

Morgan, R. P. C. (1995). Soil erosion and conservation (2nd ed.). Longman.

Chicago Style aipamena

Morgan, R. P. C. Soil Erosion and Conservation. 2nd ed. Harlow, Essex, England: Longman, 1995.

MLA aipamena

Morgan, R. P. C. Soil Erosion and Conservation. 2nd ed. Longman, 1995.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.