Thasmi, C., T. Siregar, S. Wahyuni, D. Aliza, B. Panjaitan, N. Nazaruddin, F. Sabila, and M. Fallatanza. “Anatomical and Histological Changes of Uterine Horn of Aceh Cattle With Repeat Breeding”. Journal of Advanced Veterinary and Animal Research, vol. 5, no. 4, Dec. 2018, pp. 445-53, https://banglajol.info/index.php/JAVAR/article/view/39510.