APA

United States, . (2016). VA research on posttraumatic stress disorder (PTSD). [Washington, D.C.]: U.S. Department of Veterans Affairs, Veterans Health Administration, Office of Research and Development.

Chicago

United States, . 2016. VA research on posttraumatic stress disorder (PTSD). [Washington, D.C.]: U.S. Department of Veterans Affairs, Veterans Health Administration, Office of Research and Development.

Harvard

United States, . (2016). VA research on posttraumatic stress disorder (PTSD). [Washington, D.C.]: U.S. Department of Veterans Affairs, Veterans Health Administration, Office of Research and Development.

MLA

United States, . VA research on posttraumatic stress disorder (PTSD). [Washington, D.C.]: U.S. Department of Veterans Affairs, Veterans Health Administration, Office of Research and Development. 2016.