Rawal, S. “Successful Use of Single Dose of Methotrexate for the Treatment of Unruptured Ectopic Pregnancy at Tribhuvan University Teaching Hospital, Kathmandu, Nepal”. Nepal Journal of Obstetrics and Gynaecology, vol. 7, no. 1, Oct. 2013, pp. 45-49, https://nepjol.info./index.php/NJOG/article/view/8836.