Cita APA (7a ed.)

Perkonigg, A., & Wittchen, H. (1999). Prevalence and Comorbidity of Traumatic Events and Posttraumatic Stress Disorder in Adolescents and Young Adults. Posttraumatic stress disorder, 113-133.

Cita Chicago Style (17a ed.)

Perkonigg, Axel, y Hans-Ulrich Wittchen. "Prevalence and Comorbidity of Traumatic Events and Posttraumatic Stress Disorder in Adolescents and Young Adults." Posttraumatic Stress Disorder 1999: 113-133.

Cita MLA (9a ed.)

Perkonigg, Axel, y Hans-Ulrich Wittchen. "Prevalence and Comorbidity of Traumatic Events and Posttraumatic Stress Disorder in Adolescents and Young Adults." Posttraumatic Stress Disorder, 1999, pp. 113-133.