索姆 & 柯娜尔. (2016). 德国制造业创新之谜: Low-tech innovation: competitiveness of the German manufacturing sector. 人民邮电出版社.
Čikaški stil citiranja (17. izdanje)索姆 i 柯娜尔. 德国制造业创新之谜: Low-tech Innovation: Competitiveness of the German Manufacturing Sector. 人民邮电出版社, 2016.
MLA način citiranja (8. izdanje)索姆 i 柯娜尔. 德国制造业创新之谜: Low-tech Innovation: Competitiveness of the German Manufacturing Sector. 人民邮电出版社, 2016.
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