APA (7th ed.) Zitazioa
Derks, S. (2012). Working Americans, 1880-2012. Grey House Pub..
Chicago Style (17th ed.) Zitazioa
Derks, Scott. Working Americans, 1880-2012. Armenia, NY: Grey House Pub., 2012.
MLA (9th ed.) Zitazioa
Derks, Scott. Working Americans, 1880-2012. Grey House Pub., 2012.
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