Cita APA (7a ed.)
Ewell, P. T. (1989). Linkages between On-Farm Research and Extension in Nine Countries. International Service for National Agricultural Research.
Cita Chicago Style (17a ed.)
Ewell, Peter T. Linkages Between On-Farm Research and Extension in Nine Countries. International Service for National Agricultural Research, 1989.
Cita MLA (9a ed.)
Ewell, Peter T. Linkages Between On-Farm Research and Extension in Nine Countries. International Service for National Agricultural Research, 1989.
Precaución: Estas citas no son 100% exactas.