APA (7th ed.) Citation

Beck, A. T., Emery, G., & Greenberg, R. L. (2005). Anxiety disorders and phobias: A cognitive perspective (20th ed.). Basic Books.

Chicago Style (17th ed.) Citation

Beck, Aaron T., Gary Emery, and Ruth L. Greenberg. Anxiety Disorders and Phobias: A Cognitive Perspective. 20th ed. United Sates: Basic Books, 2005.

MLA (8th ed.) Citation

Beck, Aaron T., et al. Anxiety Disorders and Phobias: A Cognitive Perspective. 20th ed. Basic Books, 2005.