Apps, J. W. (2005). Ringlingville USA: The stupendous story of seven siblings and their stunning circus success. Wisconsin Historical Society Press.
Dyfyniad Arddull ChicagoApps, Jerold W. Ringlingville USA: The Stupendous Story of Seven Siblings and Their Stunning Circus Success. Madison, Wis.: Wisconsin Historical Society Press, 2005.
Dyfyniad MLAApps, Jerold W. Ringlingville USA: The Stupendous Story of Seven Siblings and Their Stunning Circus Success. Wisconsin Historical Society Press, 2005.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.