Söderpalm, E. (1979). Speech errors in normal and pathological speech. LiberLäromedel/Gleerup.
Dyfyniad Arddull ChicagoSöderpalm, Ewa. Speech Errors in Normal and Pathological Speech. Lund: LiberLäromedel/Gleerup, 1979.
Dyfyniad MLASöderpalm, Ewa. Speech Errors in Normal and Pathological Speech. LiberLäromedel/Gleerup, 1979.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.