Watkins, N. J. (2006). The journey back to the world: Exploring the psychological effect of the Vietnam Veterans Memorials on Vietnam war combat veterans with posttraumatic stress disorder. University of Illinois at Urbana-Champaign.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Watkins, Nicholas Jay. The Journey Back to the World: Exploring the Psychological Effect of the Vietnam Veterans Memorials on Vietnam War Combat Veterans with Posttraumatic Stress Disorder. Illinois: University of Illinois at Urbana-Champaign, 2006.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Watkins, Nicholas Jay. The Journey Back to the World: Exploring the Psychological Effect of the Vietnam Veterans Memorials on Vietnam War Combat Veterans with Posttraumatic Stress Disorder. University of Illinois at Urbana-Champaign, 2006.