APA (7th ed.) Citation

Butler, G., Fennell, M. J. V., & Hackmann, A. (2008). Cognitive-behavioral therapy for anxiety disorders. Guilford Press.

Chicago Style (17th ed.) Citation

Butler, Gillian, Melanie J. V. Fennell, and Ann Hackmann. Cognitive-behavioral Therapy for Anxiety Disorders. New York: Guilford Press, 2008.

MLA (9th ed.) Citation

Butler, Gillian, et al. Cognitive-behavioral Therapy for Anxiety Disorders. Guilford Press, 2008.