Trích dẫn APA

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

Trích dẫn kiểu Chicago

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

Trích dẫn MLA

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

Cảnh báo: Các trích dẫn này có thể không phải lúc nào cũng chính xác 100%.