MLA

Roos, and Roos,Karen L Roos,Karen L. Emergency Neurology. Springer US, 2012.

APA

Roos, R., & Roos,Karen L, R. L. (2012). Emergency Neurology. Springer US.

Chicago

Roos, and Roos,Karen L Roos,Karen L. Emergency Neurology. : Springer US, 2012.