Parker, D. H. (1963). Schooling for individual excellence. T. Nelson.
Dyfyniad Arddull ChicagoParker, Don H. Schooling for Individual Excellence. New York: T. Nelson, 1963.
Dyfyniad MLAParker, Don H. Schooling for Individual Excellence. T. Nelson, 1963.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.