Tohutoro APA (7th ed.)
Ziporyn, B. (2003). The Penumbra unbound: The neo-Taoist philosophy of Guo Xiang. State University of New York Press.
Tohutoru Kātū Chicago (17th ed.)
Ziporyn, Brook. The Penumbra Unbound: The Neo-Taoist Philosophy of Guo Xiang. Albany: State University of New York Press, 2003.
Tohutoro MLA (9th ed.)
Ziporyn, Brook. The Penumbra Unbound: The Neo-Taoist Philosophy of Guo Xiang. State University of New York Press, 2003.
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