Martin, S. W., Meek, A. H., Davis, D. G., Johnson, J. A., & Curtis, R. A. (1981). Factors associated with morbidity and mortality in feedlot calves: The Bruce County beef project, year two.

Martin, S W., A H. Meek, D G. Davis, J A. Johnson, και R A. Curtis. Factors Associated With Morbidity and Mortality in Feedlot Calves: The Bruce County Beef Project, Year Two. 1981.

Martin, S W., et al. Factors Associated With Morbidity and Mortality in Feedlot Calves: The Bruce County Beef Project, Year Two. 1981.