Asmoro, Hendro, Sumardjo Sumardjo, Djoko Susanto, and Prabowo Tjitropranoto. 2018. “Improving the Quality of the Empowerment of Forest Farmer Groups in Non-Timber Forest Products Management through Extension Support in East Lampung and Sleman District”. International Journal of Sciences: Basic and Applied Research (IJSBAR) 39 (1):162-75. https://www.gssrr.org/index.php/JournalOfBasicAndApplied/article/view/9015.