Mukhlis, M., M. Noer, N. Nofialdi, and M. Mahdi. “The Integrated Farming System of Crop and Livestock: A Review of Rice and Cattle Integration Farming”. International Journal of Sciences: Basic and Applied Research (IJSBAR), vol. 42, no. 3, Nov. 2018, pp. 68-82, https://www.gssrr.org/index.php/JournalOfBasicAndApplied/article/view/9477.