Talk:De divina proportione

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Isn't the book itself a source? duh. I'll add it myself.--20-dude (talk) 23:50, 9 March 2008 (UTC)

Yes, but see primary sources. The book a primary source. Secondary sources are preferred, and are required, for example, to answer the citation request currently in the article and to verify that two versions exist today. ✤ JonHarder ^talk 00:01, 10 March 2008 (UTC)