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Lua i Stíl Chicago (17ú heag.)Society for Research in Child Development. Child Development. Chicago, Ill: University of Chicago Press, 1930.
Lua MLA (8ú heag.)Society for Research in Child Development. Child Development. University of Chicago Press, 1930.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.