APA (7th ed.) Zitazioa
Shulman, P. A. (2015). Coal & empire: The birth of energy security in industrial America. Johns Hopkins University Press.
Chicago Style (17th ed.) Zitazioa
Shulman, Peter A. Coal & Empire: The Birth of Energy Security in Industrial America. Baltimore: Johns Hopkins University Press, 2015.
MLA (9th ed.) Zitazioa
Shulman, Peter A. Coal & Empire: The Birth of Energy Security in Industrial America. Johns Hopkins University Press, 2015.
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