National Society for the Study of Education (U.S.). Committee on Preschool and Parental Education & Whipple, G. M. (1929). Preschool and parental education. National Society for the Study of Education : Public School Publishing Co..
Style de citation Chicago (17e éd.)National Society for the Study of Education (U.S.). Committee on Preschool and Parental Education et Guy Montrose Whipple. Preschool and Parental Education. Bloomington, Ill.: National Society for the Study of Education : Public School Publishing Co., 1929.
Style de citation MLA (8e éd.)National Society for the Study of Education (U.S.). Committee on Preschool and Parental Education et Guy Montrose Whipple. Preschool and Parental Education. National Society for the Study of Education : Public School Publishing Co., 1929.