Mohamad Yusof, A. S., and Z. A. Zakaria. “Single Dose Methotrexate for the Treatment of Unruptured Ectopic Pregnancy: Experience in Kemaman Hospital, Terengganu, Malaysia”. International Journal of Reproduction, Contraception, Obstetrics and Gynecology, vol. 5, no. 6, Jan. 2017, pp. 1754-6, doi:10.18203/2320-1770.ijrcog20161658.