APA (7 वां संस्करण) प्रशस्ति पत्र

(1942). I believe: The personal philosophies of twenty-three eminent men and women of our time. Allen & Unwin.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

I Believe: The Personal Philosophies of Twenty-three Eminent Men and Women of Our Time. London: Allen & Unwin, 1942.

एमएलए (8वां संस्करण) प्रशस्ति पत्र

I Believe: The Personal Philosophies of Twenty-three Eminent Men and Women of Our Time. Allen & Unwin, 1942.

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