Kafle, D., R. K. Mishra, R. K. Mahto, S. Luintel, S. Shrestha, and S. Sangroula. “Comparison of Orthodontic Treatment Duration Among Extraction Versus Non Extraction Therapies”. Orthodontic Journal of Nepal, vol. 9, no. 2, Dec. 2019, pp. 57-60, doi:10.3126/ojn.v9i2.28416.