Indriati, A., D. D. Hidayat, C. E. Andriansyah, A. Rahayuningtyas, and A. Sudaryanto. “Changes Of Some Engineering Properties Of Coffee Beans Due To Roasting Process”. Asian Journal of Applied Sciences, vol. 8, no. 1, Feb. 2020, doi:10.24203/ajas.v8i1.6055.