Croft, D. J., & Hess, R. D. (1975). An activities handbook for teachers of young children (2nd ed.). Houghton Mifflin.
Lua i Stíl Chicago (17ú heag.)Croft, Doreen J., agus Robert D. Hess. An Activities Handbook for Teachers of Young Children. 2nd ed. Boston: Houghton Mifflin, 1975.
Lua MLA (9ú heag.)Croft, Doreen J., agus Robert D. Hess. An Activities Handbook for Teachers of Young Children. 2nd ed. Houghton Mifflin, 1975.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.