Não informado. (1990). European Journal of Companion Animal Practice. Federation of European Companion Animal Veterinary Association.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. European Journal of Companion Animal Practice. Paris: Federation of European Companion Animal Veterinary Association, 1990.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. European Journal of Companion Animal Practice. Federation of European Companion Animal Veterinary Association, 1990.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.