Maspul, K. A., A. M. Akrem, and B. Bondk. “LOCAL ECONOMY EMPOWERMENT THROUGH THE SUSTAINABLE COFFEE KNOWLEDGE FOR COFFEE PROFESSIONALS IN BURAIDAH, SAUDI ARABIA”. Eqien - Jurnal Ekonomi Dan Bisnis, Vol. 10, no. 2, May 2022, pp. 141 -46, doi:10.34308/eqien.v10i2.598.