Anandaswamy, T. C., P. P. Thammanna, N. Nagaraju, and J. Manjaiah. “Persistent Left Superior Vena Cava: Implications for Anaesthesiologist”. Journal of Society of Anesthesiologists of Nepal, vol. 7, no. 2, Jan. 2021, p. e303, http://www.jsan.org.np/jsan/index.php/jsan/article/view/303.