(2004). Agriculture and the nitrogen cycle: Assessing the impacts of fertilizer use on food production and the environment. Island Press.
Chicago-Zitierstil (17. Ausg.)Agriculture and the Nitrogen Cycle: Assessing the Impacts of Fertilizer Use on Food Production and the Environment. Washington, D.C: Island Press, 2004.
MLA-Zitierstil (9. Ausg.)Agriculture and the Nitrogen Cycle: Assessing the Impacts of Fertilizer Use on Food Production and the Environment. Island Press, 2004.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.