Citazione Stile APA (7a Edizione)

Schnitzer, M., & Khan, S. U. (1972). Humic substances in the environment. M. Dekker.

Citazione stile Chigago Style (17a edizione)

Schnitzer, M., e Shahamat U. Khan. Humic Substances in the Environment. New York: M. Dekker, 1972.

Citatione MLA (9a ed.)

Schnitzer, M., e Shahamat U. Khan. Humic Substances in the Environment. M. Dekker, 1972.