Suprayog, Tri Wahyu, et al. “Improved Quality of Kambing Kacang Sexing Frozen Semen With the Addition of Green Tea Extract”. Journal of Advanced Veterinary and Animal Research, vol. 9, no. 3, Sept. 2022, pp. 412-8, https://banglajol.info/index.php/JAVAR/article/view/80199.