The psychology of preschool children - Zaporozhets, A. V. (Aleksander Vladimirovich), 1905-1981; Elkonin, D. B. (Daniil Borisovich) (MIT Press, 1974)
Τίτλος πρωτοτύπου: Psikhologii︠a︡ deteĭ doshkolʹnogo vozrasta.