Nursi, B. S. (2019). The supreme sign: The observations of a traveller questioning the Universe concerning his maker. Sozler Publications.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNursi, Bediuzzaman Said. The Supreme Sign: The Observations of a Traveller Questioning the Universe Concerning His Maker. Sozler Publications, 2019.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNursi, Bediuzzaman Said. The Supreme Sign: The Observations of a Traveller Questioning the Universe Concerning His Maker. Sozler Publications, 2019.
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