APA (7th ed.) Citation
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.
Chicago Style (17th ed.) Citation
Smithson, James Brady, O.T Edje, and 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.
MLA (9th ed.) Citation
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.
Warning: These citations may not always be 100% accurate.