Cita APA (7a ed.)

Churella, A. J. (2011). The Pennsylvania Railroad, Volume 1: Building an Empire, 1846-1917. University of Pennsylvania Press.

Cita Chicago Style (17a ed.)

Churella, Albert J. The Pennsylvania Railroad, Volume 1: Building an Empire, 1846-1917. Philadelphia: University of Pennsylvania Press, 2011.

Cita MLA (8a ed.)

Churella, Albert J. The Pennsylvania Railroad, Volume 1: Building an Empire, 1846-1917. University of Pennsylvania Press, 2011.