Cita APA (7th ed.)

Abdulhak, M., & Marzouk, S. (2006). Challenging cases in spine surgery. Thieme.

Cita Chicago (17th ed.)

Abdulhak, Muwaffak, i Shaden Marzouk. Challenging Cases in Spine Surgery. New York: Thieme, 2006.

Cita MLA (9th ed.)

Abdulhak, Muwaffak, i Shaden Marzouk. Challenging Cases in Spine Surgery. Thieme, 2006.