Burton, O. V., Cross, W., & Campbell, E. (2014). Penn Center: A history preserved. The University of Georgia Press.
Dyfyniad Arddull ChicagoBurton, Orville Vernon, Wilbur Cross, and Emory Campbell. Penn Center: A History Preserved. Athens, Georgia: The University of Georgia Press, 2014.
Dyfyniad MLABurton, Orville Vernon, et al. Penn Center: A History Preserved. The University of Georgia Press, 2014.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.