R. A. Putra, S. S. Hariadi, and M. A. Muzayyanah, “Selective Complementarity of Indigenous Leadership: Ninik Mamak’s Role in Livestock Development in Minangkabau, Indonesia”, Indian J Ext Edu, vol. 62, no. 2, pp. 20–25, Mar. 2026, doi: 10.48165/IJEE.2026.62204.