American Psychological Association. (2001). Publication manual of the American Psychological Association (Five edition.. reprinting 2005.). American Psychological Association.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)American Psychological Association. Publication Manual of the American Psychological Association. Five edition.. reprinting 2005. Washington, DC: American Psychological Association, 2001.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)American Psychological Association. Publication Manual of the American Psychological Association. Five edition.. reprinting 2005. American Psychological Association, 2001.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.