MLA

Klekamp, Jörg, and Madjid Samii. Surgery of Spinal Tumors. Springer Berlin Heidelberg, 2007.

APA

Klekamp, J., & Samii, M. (2007). Surgery of Spinal Tumors. Springer Berlin Heidelberg.

Chicago

Klekamp, Jörg, Jörg Klekamp, and Madjid Samii. Surgery of Spinal Tumors. : Springer Berlin Heidelberg, 2007.