Mohamed Ismail NA, Ibrahim M, Mohd Naim N, Mahdy ZA, Jamil MA, Mohd Razi ZR (September 2008). "Nifedipine versus terbutaline for tocolysis in external cephalic version". International Journal of Gynaecology and Obstetrics. 102 (3): 263–266. doi:10.1016/j.ijgo.2008.04.010. PMID18554601. S2CID20258298.
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Mohamed Ismail NA, Ibrahim M, Mohd Naim N, Mahdy ZA, Jamil MA, Mohd Razi ZR (September 2008). "Nifedipine versus terbutaline for tocolysis in external cephalic version". International Journal of Gynaecology and Obstetrics. 102 (3): 263–266. doi:10.1016/j.ijgo.2008.04.010. PMID18554601. S2CID20258298.
Mohamed Ismail NA, Ibrahim M, Mohd Naim N, Mahdy ZA, Jamil MA, Mohd Razi ZR (September 2008). "Nifedipine versus terbutaline for tocolysis in external cephalic version". International Journal of Gynaecology and Obstetrics. 102 (3): 263–266. doi:10.1016/j.ijgo.2008.04.010. PMID18554601. S2CID20258298.