Cita APA (7a ed.)
Gray, J. (1990). Bean (P. vulgaris) distribution in Africa: First approximation. International Center for Tropical Agriculture.
Cita Chicago Style (17a ed.)
Gray, J. Bean (P. Vulgaris) Distribution in Africa: First Approximation. International Center for Tropical Agriculture, 1990.
Cita MLA (9a ed.)
Gray, J. Bean (P. Vulgaris) Distribution in Africa: First Approximation. International Center for Tropical Agriculture, 1990.
Precaución: Estas citas no son 100% exactas.