Sawyers, J., Rogers, C. Helping Young Children Develop Through Play,
National Association for the Education of Young Children, 1988, 60 с. : със сн., 0-935989-24-2.
Sawyers, J., Rogers, C. .
Helping Young Children Develop Through Play.
Washington: National Association for the Education of Young Children, 1988, 60 с. : със сн., 0-935989-24-2.
Sawyers, J., Rogers, C. (1988)
Helping Young Children Develop Through Play,
Washington: National Association for the Education of Young Children, 60 с. : със сн., 0-935989-24-2
Sawyers, J., & Rogers, C.
(1988).
Helping Young Children Develop Through Play. A Practical Guide for Parents, Caregivers, and Teachers. Washington: National Association for the Education of Young Children, 60 с. : със сн..