Cita APA (7a ed.)
Asadu, C., & Nweke, F. (1999). Soils of arable crop fields in sub-Saharan Africa: Focus on cassavagrowing areas.
Cita Chicago Style (17a ed.)
Asadu, C., y F. Nweke. Soils of Arable Crop Fields in Sub-Saharan Africa: Focus on Cassavagrowing Areas. 1999.
Cita MLA (9a ed.)
Asadu, C., y F. Nweke. Soils of Arable Crop Fields in Sub-Saharan Africa: Focus on Cassavagrowing Areas. 1999.
Precaución: Estas citas no son 100% exactas.