IYER, R. N. (2020). The Gupta Vidya: :the pilgrimage of humanity. Theosophy Trust Books.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रIYER, Raghavan N. The Gupta Vidya: :the Pilgrimage of Humanity. Theosophy Trust Books, 2020.
एमएलए (9वां संस्करण) प्रशस्ति पत्रIYER, Raghavan N. The Gupta Vidya: :the Pilgrimage of Humanity. Theosophy Trust Books, 2020.
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