APA استشهاد

Philippines, & Bureau of Agricultural Research. (1991). On-farm research manual: The farming systems approach. Quezon City, Philippines: Bureau of agricultural research.

استشهاد بنمط شيكاغو

Philippines, و Bureau of Agricultural Research. On-farm Research Manual: The Farming Systems Approach. Quezon City, Philippines: Bureau of agricultural research, 1991.

MLA استشهاد

Philippines, و Bureau of Agricultural Research. On-farm Research Manual: The Farming Systems Approach. Quezon City, Philippines: Bureau of agricultural research, 1991.

تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.