MLA

Ahmad, Shamim, and Shamim I Ahmad. Neurodegenerative Diseases. Springer US, 2012.

APA

Ahmad, S., & Ahmad, S. I. (2012). Neurodegenerative Diseases. Springer US.

Chicago

Ahmad, Shamim, and Shamim I Ahmad. Neurodegenerative Diseases. : Springer US, 2012.