Espelho de Jade dos Quatro Desconhecidos (Portuguese Wikipedia)

Analysis of information sources in references of the Wikipedia article "Espelho de Jade dos Quatro Desconhecidos" in Portuguese language version.

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2books.google.com

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abebooks.com

«Library of Chinese Classics) Jade Mirror of the Four Unknowns (2 Volumes)(Chinese Edition) by Zhu Shijie: 9787538269239 Soft cover - liu xing». www.abebooks.com (em inglês). Consultado em 18 de setembro de 2019

books.google.com

Hart, Roger (2013). Imagined Civilizations China, the West, and Their First Encounter. Baltimore, MD: Johns Hopkins Univ Pr. p. 82. ISBN 1421406063
Elman, Benjamin A. (2005). On their own terms science in China, 1550-1900. Cambridge, Mass.: Harvard University Press. p. 252. ISBN 0674036476