Não informado. (2016). Agronomic-Economic Research on Tropical Soils, Annual Report. North Carolina State University, Soil Science Department.
Chicago-Zitierstil (17. Ausg.)Não informado. Agronomic-Economic Research on Tropical Soils, Annual Report. Raleigh, NC: North Carolina State University, Soil Science Department, 2016.
MLA-Zitierstil (8. Ausg.)Não informado. Agronomic-Economic Research on Tropical Soils, Annual Report. North Carolina State University, Soil Science Department, 2016.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.