Não informado. (1974). Journal of Veterinary Medical Education. Association of American Veterinary Medical Colleges.
Citação do estilo Chicago (17ª ed.)Não informado. Journal of Veterinary Medical Education. Washington: Association of American Veterinary Medical Colleges, 1974.
Citação MLA (8ª ed.)Não informado. Journal of Veterinary Medical Education. Association of American Veterinary Medical Colleges, 1974.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.