MLA

Fox, Robert I, and Carla M Fox. Sjögren’s Syndrome. Springer New York, 2012.

APA

Fox, R. I, & Fox, C. M. (2012). Sjögren’s Syndrome. Springer New York.

Chicago

Fox, Robert I., and Carla M Fox. Sjögren’s Syndrome. : Springer New York, 2012.