Lestari, Nurul Aeni Ayu, et al. “Penanganan Distokia Karena Schistosomus Reflexus Pada Sapi Friesian Holstein”. ARSHI Veterinary Letters, vol. 3, no. 1, Feb. 2019, pp. 9-10, https://doi.org/10.29244/avl.3.1.9-10.