Citace podle APA (7th ed.)
Keil, T. J., & Keil, J. M. (2015). Anthracite's demise and the post-coal economy of Northeastern Pennsylvania. Lehigh University Press.
Citace podle Chicago (17th ed.)
Keil, Thomas J., a Jacqueline M. Keil. Anthracite's Demise and the Post-coal Economy of Northeastern Pennsylvania. Bethlehem: Lehigh University Press, 2015.
Citace podle MLA (9th ed.)
Keil, Thomas J., a Jacqueline M. Keil. Anthracite's Demise and the Post-coal Economy of Northeastern Pennsylvania. Lehigh University Press, 2015.
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