(1968). Early childhood play: Selected readings related to cognition and motivation. Selected Academic Readings.
Chicago-Zitierstil (17. Ausg.)Early Childhood Play: Selected Readings Related to Cognition and Motivation. New York: Selected Academic Readings, 1968.
MLA-Zitierstil (9. Ausg.)Early Childhood Play: Selected Readings Related to Cognition and Motivation. Selected Academic Readings, 1968.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.