Soebagio, and R. Moh. Yogiartono. “The Effectiveness Of The Long-Term Acrylic Resin Plate Immersion In Various Concentrations Of Black Tea On Color Change Difference”. International Journal of Psychosocial Rehabilitation, vol. 24, no. 9, Nov. 2020, pp. 3611-22, https://doi.org/10.61841/35kh8b19.