Cita APA (7a ed.)
Smithson, J. B., Edje, O., & Giller, K. E. (1993). Diagnosis and correction of soil nutrient problems of common beans (Phaseolus vulgaris) in the Usambara mountains of Tanzania. Cambridge University Press.
Cita Chicago Style (17a ed.)
Smithson, James Brady, O.T Edje, y Kenneth E. Giller. Diagnosis and Correction of Soil Nutrient Problems of Common Beans (Phaseolus Vulgaris) in the Usambara Mountains of Tanzania. Cambridge University Press, 1993.
Cita MLA (9a ed.)
Smithson, James Brady, et al. Diagnosis and Correction of Soil Nutrient Problems of Common Beans (Phaseolus Vulgaris) in the Usambara Mountains of Tanzania. Cambridge University Press, 1993.
Precaución: Estas citas no son 100% exactas.