MLA

Vasa, Roma A, and Amy Krain Roy. Pediatric Anxiety Disorders. Springer New York, 2013.

APA

Vasa, R. A, & Roy, A. Krain. (2013). Pediatric Anxiety Disorders. Springer New York.

Chicago

Vasa, Roma A., and Amy Krain Roy. Pediatric Anxiety Disorders. : Springer New York, 2013.