APA

Hird D. W., Weigler B. J., Salman M. D., Danaye-Elmi C., Palmer C. W., Holmes J. C., Utterback W. W. & Sischo W. M. (19910529). Expenditures for veterinary services and other costs of disease and disease prevention in 57 California beef herds in the National Animal Health Monitoring System (1988-1989). : Journal of the American Veterinary Medical Association.

Chicago

Hird D W, Weigler B J, Salman M D, Danaye-Elmi C, Palmer C W, Holmes J C, Utterback W W and Sischo W M. 19910529. Expenditures for veterinary services and other costs of disease and disease prevention in 57 California beef herds in the National Animal Health Monitoring System (1988-1989). : Journal of the American Veterinary Medical Association.

Harvard

Hird D. W., Weigler B. J., Salman M. D., Danaye-Elmi C., Palmer C. W., Holmes J. C., Utterback W. W. and Sischo W. M. (19910529). Expenditures for veterinary services and other costs of disease and disease prevention in 57 California beef herds in the National Animal Health Monitoring System (1988-1989). : Journal of the American Veterinary Medical Association.

MLA

Hird D W, Weigler B J, Salman M D, Danaye-Elmi C, Palmer C W, Holmes J C, Utterback W W and Sischo W M. Expenditures for veterinary services and other costs of disease and disease prevention in 57 California beef herds in the National Animal Health Monitoring System (1988-1989). : Journal of the American Veterinary Medical Association. 19910529.