Nkwabong, E., M. F. Mba, and J. N. Fomulu. “Outcome of Labor in Vertex Malposition in Cameroon”. International Journal of Reproduction, Contraception, Obstetrics and Gynecology, vol. 4, no. 3, Feb. 2017, pp. 555-9, doi:10.18203/2320-1770.ijrcog20150050.