Indrayanti, Asro Laelani, et al. “Studi Kasus Analisis Pendapatan Usaha Copasme Di Kota Palangka Raya: Case Study of Copasme Business Revenue Analysis in Palangka Raya City”. Daun: Jurnal Ilmiah Pertanian Dan Kehutanan, vol. 5, no. 1, June 2018, pp. 10-16, https://doi.org/10.33084/daun.v5i1.320.