Cita APA

Philippines, & Bureau of Agricultural Research. (1990). On-farm research manual: Cropping systems research. Quezon city, Philippines: Bureau of agricultural research.

Chicago Style Citation

Philippines, i Bureau of Agricultural Research. On-farm Research Manual: Cropping Systems Research. Quezon city, Philippines: Bureau of agricultural research, 1990.

Cita MLA

Philippines, i Bureau of Agricultural Research. On-farm Research Manual: Cropping Systems Research. Quezon city, Philippines: Bureau of agricultural research, 1990.

Atenció: Aquestes cites poden no estar 100% correctes.