Peregrine, A. S., Martin, S. W., Hopwood, D. A., Duffield, T. F., McEwen, B., Hobson, J. C., & Hietala, S. K. (2006). Neospora caninum and Leptospira serovar serostatus in dairy cattle in Ontario. Canadian Veterinary Medical Association.

Peregrine, Andrew S., S. Wayne Martin, Douglas A. Hopwood, Todd F. Duffield, Beverly McEwen, Jamie C. Hobson, و Sharon K. Hietala. Neospora Caninum and Leptospira Serovar Serostatus in Dairy Cattle in Ontario. Canadian Veterinary Medical Association, 2006.

Peregrine, Andrew S., et al. Neospora Caninum and Leptospira Serovar Serostatus in Dairy Cattle in Ontario. Canadian Veterinary Medical Association, 2006.