Kaunonen, G. (2010). Challenge accepted: A Finnish immigrant response to industrial America in Michigan's copper country. Michigan State University Press.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Kaunonen, Gary. Challenge Accepted: A Finnish Immigrant Response to Industrial America in Michigan's Copper Country. East Lansing: Michigan State University Press, 2010.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Kaunonen, Gary. Challenge Accepted: A Finnish Immigrant Response to Industrial America in Michigan's Copper Country. Michigan State University Press, 2010.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.