APA aipamena

Kumada, K. (1987). Chemistry of soil organic matter. Tokyo: Japan Scientific Societies Press.

Chicago Style aipamena

Kumada, Kyoichi. Chemistry of Soil Organic Matter. Tokyo: Japan Scientific Societies Press, 1987.

MLA aipamena

Kumada, Kyoichi. Chemistry of Soil Organic Matter. Tokyo: Japan Scientific Societies Press, 1987.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.