“A Comparison of Serological Responses When Modified-Live Infectious Bovine Rhinotracheitis Virus Vaccine and Mannheimia Haemolytica Bacterin-Toxoid Are Administered With Needle-Free Versus Conventional Needle-Based Injection in Yearling Feedlot Steers”. The Bovine Practitioner, vol. 39, no. 2, June 2005, pp. 106-9, https://doi.org/10.21423/bovine-vol39no2p106-109.