Tariq, A. R. (1977). Secrets of ego: Being a descriptive and comprehensive translation of Allama Iqbal's Asrar-i-khudi'' (First edition.). Islamic Book Service.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Tariq, Abdur Rahman. Secrets of Ego: Being a Descriptive and Comprehensive Translation of Allama Iqbal's Asrar-i-khudi''. First edition. Lahore: Islamic Book Service, 1977.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Tariq, Abdur Rahman. Secrets of Ego: Being a Descriptive and Comprehensive Translation of Allama Iqbal's Asrar-i-khudi''. First edition. Islamic Book Service, 1977.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.