Fernández Abarca, M. (2004). Interaction in the English classroom; an exploratory study. Universidad de Costa Rica.
Lua i Stíl Chicago (17ú heag.)Fernández Abarca, Marianella. Interaction in the English Classroom; an Exploratory Study. Universidad de Costa Rica, 2004.
Lua MLA (9ú heag.)Fernández Abarca, Marianella. Interaction in the English Classroom; an Exploratory Study. Universidad de Costa Rica, 2004.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.