Misfit Putrina, et al. “A Model for Small Farm Sugar Industry Business Development in Lareh Sago Halaban District, Lima Puluh Kota Regency,West Sumatera, Indonesia”. International Journal of Sciences: Basic and Applied Research (IJSBAR), vol. 68, no. 1, May 2023, pp. 234-7, https://gssrr.org/JournalOfBasicAndApplied/article/view/15727.