Jackson, Y., & Rogers, F. (1968). Type and Touch Type Writing: Teaching Manual. Heinnemann Educational books.
Dyfyniad Arddull ChicagoJackson, Yyonne, and Fred Rogers. Type and Touch Type Writing: Teaching Manual. London: Heinnemann Educational books, 1968.
Dyfyniad MLAJackson, Yyonne, and Fred Rogers. Type and Touch Type Writing: Teaching Manual. Heinnemann Educational books, 1968.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.