Widyastuti, R., et al. “The Viabilities of Freeze-Thaw Pasundan-Bull Sperms After a Short-Term Exposure to Media With Different PHs”. Tropical Animal Science Journal, vol. 45, no. 3, Aug. 2022, pp. 270-6, https://doi.org/10.5398/tasj.2022.45.3.270.