Anindita, Irza, Roso Witjaksono, and Harsoyo. 2023. “The Role of Farmer Group Leader in Implementing The Cocoa Cultivation Technology at Patuk Sub-District, Gunungkidul Regency”. Journal of Agribusiness Management and Development 2 (1), 55-63. https://jurnal.ugm.ac.id/v3/JAMADEV/article/view/973.