Cratty, B. J. (1979). Perceptual and motor development in infants and children (2nd edition.). Prentice-Hall.
Chicago-Zitierstil (17. Ausg.)Cratty, Bryant J. Perceptual and Motor Development in Infants and Children. 2nd edition. Englewood Cliffs, N.J: Prentice-Hall, 1979.
MLA-Zitierstil (9. Ausg.)Cratty, Bryant J. Perceptual and Motor Development in Infants and Children. 2nd edition. Prentice-Hall, 1979.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.