E. Martin, D. Suharjito, D. Darusman, S. Sunito, and B. Winarno, “Tunggu Tubang and Ulu Ayek: Social Mechanism of Sustainable Protected Forest Management”, J Man Hut Trop, vol. 22, no. 2, p. 85, Aug. 2016, doi: 10.7226/jtfm.22.2.85.