Cita APA (7th ed.)
Hardenberg, J. Journal of the American Veterinary Medical Association.
Cita Chicago (17th ed.)
Hardenberg, J.G. Journal of the American Veterinary Medical Association.
Cita MLA (9th ed.)
Hardenberg, J.G. Journal of the American Veterinary Medical Association.
Atenció: Aquestes cites poden no estar 100% correctes.