Mutz, M. Saving energy by shifting clocks?: Energy policy and the introduction of dayligth saving time in East and West Germany / Mathias Mutz. Past and present energy societies : how energy connects politics, technologies and cultures.(2012).
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Mutz, Mathias. "Saving Energy by Shifting Clocks?: Energy Policy and the Introduction of Dayligth Saving Time in East and West Germany / Mathias Mutz." Past and Present Energy Societies : How Energy Connects Politics, Technologies and Cultures.(2012) .
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Mutz, Mathias. "Saving Energy by Shifting Clocks?: Energy Policy and the Introduction of Dayligth Saving Time in East and West Germany / Mathias Mutz." Past and Present Energy Societies : How Energy Connects Politics, Technologies and Cultures.(2012), .