Choudhry, G. G. (1984). Humic substances: Structural, photophysical, photochemical and free radical aspects and interactions with environmental chemicals. Gordon and Breach.
Chicago-Zitierstil (17. Ausg.)Choudhry, Ghulam Ghaus. Humic Substances: Structural, Photophysical, Photochemical and Free Radical Aspects and Interactions with Environmental Chemicals. New York u.a: Gordon and Breach, 1984.
MLA-Zitierstil (9. Ausg.)Choudhry, Ghulam Ghaus. Humic Substances: Structural, Photophysical, Photochemical and Free Radical Aspects and Interactions with Environmental Chemicals. Gordon and Breach, 1984.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.