Watt, I. R. (1975). Pig handbook. Dept. of Agriculture, Stock and Fisheries.
Citazione stile Chigago Style (17a edizione)Watt, I. R. Pig Handbook. Port Moresby: Dept. of Agriculture, Stock and Fisheries, 1975.
Citatione MLA (9a ed.)Watt, I. R. Pig Handbook. Dept. of Agriculture, Stock and Fisheries, 1975.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.