Supermanto, S., S. . Priyono, S. . Purwayantie, N. E. . Saputri, D. . Fadly, and D. . Ayuni. “Study of The Temperature and Timing Roasting of Black Glutinous Rice and Robusta Beans on The Quality of Coffee Powder”. Journal of Health and Nutrition Research, vol. 1, no. 2, Aug. 2022, pp. 56-63, doi:10.56303/jhnresearch.v1i2.14.