Mahendra, B., D. P. N. Kinding, and A. D. Safitri. “UPLAND PROGRAM IN INCREASING THE INCOME OF HIGHLAND FARMERS IN PURBALINGGA REGENCY”. Journal of Agri Socio Economics and Business, vol. 4, no. 02, Dec. 2022, pp. 171-80, doi:10.31186/jaseb.04.2.171-180.