1. Sheenam Kansal, Lucky Jindal, Kriti Garg, Kalpna Thakur, Silky Mehta, Himangi Pachori, International Journal of Health and Clinical Research, 3, 2:58–62 (2020).
2. Madhura Deshmukh, Nabeel Ahmed, Journal of Contemporary Issues in Business and Government, 26, 2:184–191 (2020).
3. Causes and Management of Tooth Discoloration: A Review
4. Manuel S. Thomas, Clinical Dentistry, 41: 440–447 (2014)
5. Pratomo A.H., Triaminingsih S., and Indrani D.J., IOP Conf. Series: Journal of Physics: Conf. Series 1073:1–8 (2018).