Cita APA (7a ed.)
Churella, A. J. (2013). The Pennsylvania Railroad. University of Pennsylvania Press.
Cita Chicago Style (17a ed.)
Churella, Albert J. The Pennsylvania Railroad. Philadelphia: University of Pennsylvania Press, 2013.
Cita MLA (9a ed.)
Churella, Albert J. The Pennsylvania Railroad. University of Pennsylvania Press, 2013.
Precaución: Estas citas no son 100% exactas.