Arnold Gesell, Frances Lillian Ilg (1951). “Infant and Child in the Culture of Today: The Guidance of Development in Home and Nursery School (From the Former Clinic of Child Development, School of Medicine at Yale University)”
Arnold Gesell, Frances Lillian Ilg (1951). “Infant and Child in the Culture of Today: The Guidance of Development in Home and Nursery School (From the Former Clinic of Child Development, School of Medicine at Yale University)”