Rachmawati, Emma, and Mirna Febriani. “Potential of Strawberry (Fragaria X Annanasea) Extract As Whitening Agent for Discolored Teeth”. International Journal of Medical Science and Clinical Invention 9, no. 08 (August 6, 2022): 6211–6216. Accessed July 23, 2024. https://valleyinternational.net/index.php/ijmsci/article/view/3582.