Não informado. (1978). Veterinary surgery. American College of Veterinary Surgeons.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Veterinary Surgery. Philadelphia, Pa: American College of Veterinary Surgeons, 1978.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Veterinary Surgery. American College of Veterinary Surgeons, 1978.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.