Research Club in Language Learning (Ann Arbor, Mich.), & Fries, C. C. (1948). Language learning: A journal of applied linguistics. s.n..
Lua i Stíl Chicago (17ú heag.)Research Club in Language Learning (Ann Arbor, Mich.), agus Charles C. Fries. Language Learning: A Journal of Applied Linguistics. Ann Arbor, Mich.: s.n., 1948.
Lua MLA (8ú heag.)Research Club in Language Learning (Ann Arbor, Mich.), agus Charles C. Fries. Language Learning: A Journal of Applied Linguistics. s.n., 1948.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.