Não informado. Report of the Ontario Veterinary College. Department of Agriculture.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Report of the Ontario Veterinary College. Guelph, Canada: Department of Agriculture.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Report of the Ontario Veterinary College. Department of Agriculture.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.