APA (7th ed.) Citation

Portman, M. E. (2009). Generalized Anxiety Disorder Across the Lifespan: An Integrative Approach. Springer New York.

Chicago Style (17th ed.) Citation

Portman, Michael E. Generalized Anxiety Disorder Across the Lifespan: An Integrative Approach. New York, NY: Springer New York, 2009.

MLA (8th ed.) Citation

Portman, Michael E. Generalized Anxiety Disorder Across the Lifespan: An Integrative Approach. Springer New York, 2009.