Cita APA (7a ed.)
Gridley, H. E. (1994). A summary of yield results from the first East African zonal yield trial. International Center for Tropical Agriculture.
Cita Chicago Style (17a ed.)
Gridley, Howard E. A Summary of Yield Results from the First East African Zonal Yield Trial. International Center for Tropical Agriculture, 1994.
Cita MLA (9a ed.)
Gridley, Howard E. A Summary of Yield Results from the First East African Zonal Yield Trial. International Center for Tropical Agriculture, 1994.
Precaución: Estas citas no son 100% exactas.