Yoka Aman Saputra, and M. Oktaviannur. 2024. “The Influence of Raw Material Quality and Production Process on Product Quality in Rigis Village Coffee Powder Brand Coffee Business in West Lampung Regency”. International Journal of Economics, Business and Innovation Research 3 (02), 886-97. https://doi.org/10.63922/ijebir.v3i02.796.