1. 1. Nicholas RA , Ayling RD. Mycoplasma bovis: disease, diagnosis, and control. Res. Vet. Sci., 2003; 74: 105-12. https://doi.org/10.1016/S0034-5288(02)00155-8
2. 2. Radostitis OM, Gay CC, Hinchcliff KW, Constable PD. 2007. Veterinary Medicine : A textbook of the diseases of cattle, horses, Sheep, Pig & goats. Part1, PP:471-472.10th ed, Elsevier, New York.
3. 3. Taylor JD, Fulton RW, Lehenbauer TW, Step DL, Confer AW. The epidemiology of bovine respiratory disease: what is the evidence for predisposing factors?. Can. Vet. J., 2010; 51: 1095-1102.
4. 4. Quinn PJ, Markey BK, Leonard FC, Fitz Patric ES, Fanning S, Hartigan PJ. Veterinary Microbiology & Microbial disease, 2011; 67-69. 2nd ed. UK. WiLey-Blackwell.
5. 5. Petersen MB, Ersbרll AK, Krogh K, Nielsen LR. Increased incidence rate of undesired early heifer departure in Mycoplasma bovis-antibody positive Danish dairy cattle herds. Prevent Vet. Med., 2019; 166: 86-92. https://doi.org/10.1016/j.prevetmed.2019.03.013