Cita APA (7a ed.)

wafa, M., El-Badrawi, A., & Michael, F. (2012). Partial pedicle subtraction osteotomy (PPSO): A modification for PSO in treatment of sagittal deformities. Egyptian Spine Association.

Cita Chicago Style (17a ed.)

wafa, Mohamed, Ahmed El-Badrawi, y Fady Michael. Partial Pedicle Subtraction Osteotomy (PPSO): A Modification for PSO in Treatment of Sagittal Deformities. Egyptian Spine Association, 2012.

Cita MLA (8a ed.)

wafa, Mohamed, et al. Partial Pedicle Subtraction Osteotomy (PPSO): A Modification for PSO in Treatment of Sagittal Deformities. Egyptian Spine Association, 2012.