Strong, C. F. (1950). History in the primary school. University of London Press.
Dyfyniad Arddull ChicagoStrong, Charles Frederick. History in the Primary School. London: University of London Press, 1950.
Dyfyniad MLAStrong, Charles Frederick. History in the Primary School. University of London Press, 1950.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.