Iqbal, M., & Nicholson, R. A. (1977). The secrets of the self =: Asrar-i khudi : a philosophical poem. Farhan Publishers : can be had from Universal Books.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Iqbal, Muhammad, و Reynold Alleyne Nicholson. The Secrets of the Self =: Asrar-i Khudi : A Philosophical Poem. Lahore: Farhan Publishers : can be had from Universal Books, 1977.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Iqbal, Muhammad, و Reynold Alleyne Nicholson. The Secrets of the Self =: Asrar-i Khudi : A Philosophical Poem. Farhan Publishers : can be had from Universal Books, 1977.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.