Three theories of child development the contributions of Erik H. Erikson, Jean Piaget and Robert R. Sears and their applications
Maier, Henry W.(Henry William)
New York London Harper & Row
1969
Revised ed. originally published, New York: Harper & Row, 1969
bibl p305-336
Sears, Robert Richardson.
Piaget, Jean, 1896-1980.
Erikson, Erik H. (Erik Homburger), 1902-1994.
Child study.