Philippines, & Bureau of Agricultural Research. (1991). On-farm research manual: The farming systems approach. Quezon City, Philippines: Bureau of agricultural research.
Citación estilo ChicagoPhilippines, y Bureau of Agricultural Research. On-farm Research Manual: The Farming Systems Approach. Quezon City, Philippines: Bureau of agricultural research, 1991.
Cita MLAPhilippines, y Bureau of Agricultural Research. On-farm Research Manual: The Farming Systems Approach. Quezon City, Philippines: Bureau of agricultural research, 1991.
Precaución: Estas citas no son 100% exactas.