Zulfiningrum, R. Z., S. S. Sumardjo, S. A. Amiruddin, and A. I. Ivanovich. “Role of Agricultural Counselling Centre in the Development of Black Rice Programme in Central Java, Indonesia: Role of Agricultural Counseling Center in the Development of Black Rice Program”. Journal of Agricultural Extension, vol. 23, no. 3, July 2019, pp. 84-94, https://journal.aesonnigeria.org/index.php/jae/article/view/1770.