Okoh, N., M. U. Ibrahim, M. N. Salihu, and Y. Ibrahim. “Extraskeletal Osteosarcoma: A Case Report: https://doi.Org/10.60787/NMJ-63-1-98”. Nigerian Medical Journal, vol. 63, no. 1, Sept. 2022, pp. 86-90, doi:10.60787/nmj.v63i1.98.