Amit, M. L., L. Barr, and E. Smith. “Benign Cyst or Malignancy? A Six-Year-Old With Primitive Small Round Cell Sarcoma of the Right Buttock: A Case Report”. International Journal of Contemporary Pediatrics, vol. 9, no. 2, Jan. 2022, pp. 192-5, doi:10.18203/2349-3291.ijcp20220093.