APA (7th ed.) Citation

Zayfert, C., & DeViva, J. C. (2011). When someone you love suffers from posttraumatic stress: What to expect and what you can do. The Guilford Press.

Chicago Style (17th ed.) Citation

Zayfert, Claudia, and Jason C. DeViva. When Someone You Love Suffers from Posttraumatic Stress: What to Expect and What You Can Do. New York: The Guilford Press, 2011.

MLA (9th ed.) Citation

Zayfert, Claudia, and Jason C. DeViva. When Someone You Love Suffers from Posttraumatic Stress: What to Expect and What You Can Do. The Guilford Press, 2011.