Stone, A. (2005). Petrified intelligence: Nature in Hegel's philosophy. State University of New York Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रStone, Alison. Petrified Intelligence: Nature in Hegel's Philosophy. Albany: State University of New York Press, 2005.
एमएलए (9वां संस्करण) प्रशस्ति पत्रStone, Alison. Petrified Intelligence: Nature in Hegel's Philosophy. State University of New York Press, 2005.
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