"Reprinted with modifications from Children: development and relationships, Second edition, by Mollie S. Smart and Russell C. Smart, copyright 1967 an...
"Reprinted with modifications from Children: development and relationships, Second edition, by Mollie S. Smart and Russell C. Smart, copyright 1967 and 1972 ... and Readings in child development and relationships, by Russell C. Smart and Mollie S. Smart, copyright 1972."