Boyle, D. G. (1971). Language and thinking in human development. Hutchinson University Library.
Lua i Stíl Chicago (17ú heag.)Boyle, D. G. Language and Thinking in Human Development. London: Hutchinson University Library, 1971.
Lua MLA (9ú heag.)Boyle, D. G. Language and Thinking in Human Development. Hutchinson University Library, 1971.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.