B. S. D. Simamora, B. N. R. Purnomo, E. K. S. Limijadi, and N. Hardini, “Effect of Strawberry Extract (Fragaria x ananassa) towards Discoloration of Artificial Teeth due to Tea Immersion”, eG, vol. 10, no. 2, pp. 255–261, Sep. 2022.