Simpson, W. (1996). The Buddhist praying-wheel: The symbolism of the wheel and circular movements in custom and religious ritual. Aryan Books International.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रSimpson, William. The Buddhist Praying-wheel: The Symbolism of the Wheel and Circular Movements in Custom and Religious Ritual. New Delhi: Aryan Books International, 1996.
एमएलए (9वां संस्करण) प्रशस्ति पत्रSimpson, William. The Buddhist Praying-wheel: The Symbolism of the Wheel and Circular Movements in Custom and Religious Ritual. Aryan Books International, 1996.
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