LEEPER, S. H., DALES, R. J., & SKIPPER, D. S. (1968). Good schools for young children. The MacMillan Company.
Lua i Stíl Chicago (17ú heag.)LEEPER, Sarah Hammond, Ruth J. DALES, agus Dora Sikes SKIPPER. Good Schools for Young Children. London: The MacMillan Company, 1968.
Lua MLA (9ú heag.)LEEPER, Sarah Hammond, et al. Good Schools for Young Children. The MacMillan Company, 1968.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.