Schiefelbusch, R. L. (1974). Language perspectives-acquisition, retardation, and intervention: Robert K. Hoyt. University Park Press.
Dyfyniad Arddull ChicagoSchiefelbusch, Richard L. Language Perspectives-acquisition, Retardation, and Intervention: Robert K. Hoyt. Baltimore: University Park Press, 1974.
Dyfyniad MLASchiefelbusch, Richard L. Language Perspectives-acquisition, Retardation, and Intervention: Robert K. Hoyt. University Park Press, 1974.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.