Cita APA (7a ed.)
Hulugalle, N. (1990). Alleviation of soil constraints to crop growth in the upland alfisols and associated soil group of the West African Sudan savannah by tied ridges. Elsevier.
Cita Chicago Style (17a ed.)
Hulugalle, N.R. Alleviation of Soil Constraints to Crop Growth in the Upland Alfisols and Associated Soil Group of the West African Sudan Savannah by Tied Ridges. Elsevier, 1990.
Cita MLA (9a ed.)
Hulugalle, N.R. Alleviation of Soil Constraints to Crop Growth in the Upland Alfisols and Associated Soil Group of the West African Sudan Savannah by Tied Ridges. Elsevier, 1990.
Precaución: Estas citas no son 100% exactas.