Chowdhury, F., S. Ferdousi, A. Beg, and M. A. Islam. “Placenta Percreta in First Trimester Pregnancy: A Case Report and Review of Literature”. Community Based Medical Journal, vol. 5, no. 1, Feb. 2016, pp. 46-49, doi:10.3329/cbmj.v5i1.53921.