Shraddha, Sirsat, et al. “Histopathology of Lactating, Non-Lactating and Mastitis Buffalo Mammary Gland Tissue”. International Journal of Livestock Research, vol. 8, no. 11, Nov. 2018, pp. 125-32, http://ijlr.org/ojs_journal/index.php/ijlr/article/view/1499.