APA引文

Philippines, & Bureau of Agricultural Research. (1991). On-farm research manual: Crop-livestock systems. Quezon city, Philippines: Bureau of agricultural research.

Trích dẫn kiểu Chicago

Philippines, và Bureau of Agricultural Research. On-farm Research Manual: Crop-livestock Systems. Quezon city, Philippines: Bureau of agricultural research, 1991.

MLA引文

Philippines, và Bureau of Agricultural Research. On-farm Research Manual: Crop-livestock Systems. Quezon city, Philippines: Bureau of agricultural research, 1991.

警告：这些引文格式不一定是100％准确.