Wichtel, J. J., Keefe, G. P., Van Leeuwen, J. A., Spangler, E., McNiven, M. A., & Ogilvie, T. H. (2004). The selenium status of dairy herds in Prince Edward Island. Canadian Veterinary Medical Association.
Citación estilo ChicagoWichtel, Jeffrey J., Gregory P. Keefe, John A. Van Leeuwen, Elizabeth Spangler, Mary A. McNiven, y Timothy H. Ogilvie. The Selenium Status of Dairy Herds in Prince Edward Island. Canadian Veterinary Medical Association, 2004.
Cita MLAWichtel, Jeffrey J., et al. The Selenium Status of Dairy Herds in Prince Edward Island. Canadian Veterinary Medical Association, 2004.
Precaución: Estas citas no son 100% exactas.