“Systematic Review of Vaccine Efficacy Against Mannheimia Haemolytica, Pasteurella Multocida, and Histophilus Somni in North American Cattle”. The Bovine Practitioner 55, no. 2 (December 31, 2021): 125–133. Accessed November 22, 2024. https://bovine-ojs-tamu.tdl.org/bovine/article/view/8240.