Powell, J. (1969). Why am I afraid to tell you who I am?: (Insights on self-awareness, personal growth and interpersonal communication). Argus Communications.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Powell, John. Why Am I Afraid to Tell You Who I Am?: (Insights on Self-awareness, Personal Growth and Interpersonal Communication). Chicago: Argus Communications, 1969.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Powell, John. Why Am I Afraid to Tell You Who I Am?: (Insights on Self-awareness, Personal Growth and Interpersonal Communication). Argus Communications, 1969.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.