Cita APA (7a ed.)
Lupwayi, N., & Mkandawire, A. (1992). Improved soil fertiliy increases nodulation of Phaseolus beans. International Center for Tropical Agriculture.
Cita Chicago Style (17a ed.)
Lupwayi, N.Z, y A.B.C Mkandawire. Improved Soil Fertiliy Increases Nodulation of Phaseolus Beans. International Center for Tropical Agriculture, 1992.
Cita MLA (9a ed.)
Lupwayi, N.Z, y A.B.C Mkandawire. Improved Soil Fertiliy Increases Nodulation of Phaseolus Beans. International Center for Tropical Agriculture, 1992.
Precaución: Estas citas no son 100% exactas.