Karim Ahmed, A., Pennington, Z., Suk, I., Rory Goodwin, C., Gokaslan, Z. L., & Sciubba, D. M. (2018). Intralesional sacrectomy. In Spinal Tumor Surgery: A Case-Based Approach (pp. 239–249). https://doi.org/10.1007/978-3-319-98422-3_22

Karim Ahmed, A., Z. Pennington, I. Suk, C. Rory Goodwin, Z. L. Gokaslan, and D. M. Sciubba. “Intralesional sacrectomy.” In Spinal Tumor Surgery: A Case-Based Approach, 239–49, 2018. https://doi.org/10.1007/978-3-319-98422-3_22.

Karim Ahmed A, Pennington Z, Suk I, Rory Goodwin C, Gokaslan ZL, Sciubba DM. Intralesional sacrectomy. In: Spinal Tumor Surgery: A Case-Based Approach. 2018. p. 239–49.

Karim Ahmed, A., et al. “Intralesional sacrectomy.” Spinal Tumor Surgery: A Case-Based Approach, 2018, pp. 239–49. Scopus, doi:10.1007/978-3-319-98422-3_22.

Karim Ahmed A, Pennington Z, Suk I, Rory Goodwin C, Gokaslan ZL, Sciubba DM. Intralesional sacrectomy. Spinal Tumor Surgery: A Case-Based Approach. 2018. p. 239–249.