Dittmann, L. L. (1967). Children in day care: With focus on health. U.S. Children's Bureau, [for sale by the Supt. of Docs., U.S. Govt. Print. Off.].
Lua i Stíl Chicago (17ú heag.)Dittmann, Laura L. Children in Day Care: With Focus on Health. Washington: U.S. Children's Bureau, [for sale by the Supt. of Docs., U.S. Govt. Print. Off.], 1967.
Lua MLA (8ú heag.)Dittmann, Laura L. Children in Day Care: With Focus on Health. U.S. Children's Bureau, [for sale by the Supt. of Docs., U.S. Govt. Print. Off.], 1967.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.