Surachman Suwardi, Dyah Gandasari, Alan Sugandi, Rifa Rafi’atu Syabani Wihansah, Wardani,. 2020. “Sociometry Analysis of Beef Cattle Farmers Institution in Indonesia: Case of Bina Insani As an Advanced Farmers Group”. International Journal of Advanced Science and Technology 29 (3), 5375 -85. http://sersc.org/journals/index.php/IJAST/article/view/6039.