Cita APA (7a ed.)
Wortmann, C. S., & Lynch, J. P. (1995). Bean improvement for low fertility in Africa (BILFA): I. Low soil nitrogen availability.
Cita Chicago Style (17a ed.)
Wortmann, Charles S., y Jonathan P. Lynch. Bean Improvement for Low Fertility in Africa (BILFA): I. Low Soil Nitrogen Availability. 1995.
Cita MLA (9a ed.)
Wortmann, Charles S., y Jonathan P. Lynch. Bean Improvement for Low Fertility in Africa (BILFA): I. Low Soil Nitrogen Availability. 1995.
Precaución: Estas citas no son 100% exactas.