Perceptual-Motor Maturation and Language Development in Young Children

Bender L. Visual motor gestalt test and its clinical use. New York: American Ortho. Psychiat. Assn, 1938. (Monogr. No. 3)

Dunn L. M. Peabody Picture Vocabulary Test. Minneapolis: American Guidance Service, 1959.

Gibson J. J. , & Gibson E. J. Perceptual learning: differentiation or enrichment? Psychological Review, 1955, 62, 33–40.

Hebb D. O. The organization of behavior. New York: Wiley, 1949.

Kephart N. C. The slow learner in the classroom. Columbus, O.: Merrill, 1960.

Koppitz E. N. The Bender-Gestalt test for young children. New York: Grune & Stratton, 1964.