APA (7th ed.) Zitazioa
Blair, T. (2010). Poorer Richard's America: What would Ben say? Skyhorse Pub..
Chicago Style (17th ed.) Zitazioa
Blair, Tom. Poorer Richard's America: What Would Ben Say? New York, NY: Skyhorse Pub., 2010.
MLA (9th ed.) Zitazioa
Blair, Tom. Poorer Richard's America: What Would Ben Say? Skyhorse Pub., 2010.
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