APA

Preston T. R., Food and Agriculture Organization of the United Nations & International Livestock Centre for Africa. (19851986). Better utilization of crop residues and by-products in animal feeding : research guidelines: 2. A practical manual for research workers. Rome: Food and Agriculture Organization of the United Nations.

Chicago

Preston T R, Food and Agriculture Organization of the United Nations and International Livestock Centre for Africa. 19851986. Better utilization of crop residues and by-products in animal feeding : research guidelines: 2. A practical manual for research workers. Rome: Food and Agriculture Organization of the United Nations.

Harvard

Preston T. R., Food and Agriculture Organization of the United Nations and International Livestock Centre for Africa. (19851986). Better utilization of crop residues and by-products in animal feeding : research guidelines: 2. A practical manual for research workers. Rome: Food and Agriculture Organization of the United Nations.

MLA

Preston T R, Food and Agriculture Organization of the United Nations and International Livestock Centre for Africa. Better utilization of crop residues and by-products in animal feeding : research guidelines: 2. A practical manual for research workers. Rome: Food and Agriculture Organization of the United Nations. 19851986.