Suharni, S., H. Sonjaya, H. Hasbi, and siti farida. “Fresh and Frozen Semen Quality of Horned and Polled Bali Bulls”. International Journal of Sciences: Basic and Applied Research (IJSBAR), vol. 68, no. 1, Apr. 2023, pp. 1-17, https://gssrr.org/index.php/JournalOfBasicAndApplied/article/view/15659.