Bryant, T. C., J. R. Nichols, T. D. Farmer, and D. G. Miles. “Effect of Tilmicosin Alone or in Combination With Mannheimia Haemolytica Toxoid Administered at Initial Feedlot Processing on Morbidity and Mortality of High-Risk Calves”. The Bovine Practitioner, vol. 42, no. 1, Feb. 2008, pp. 50-55, doi:10.21423/bovine-vol42no1p50-55.