GASS, S. M. [. e. (1990). Linguistic perspectives on second language acquisition. Cambridge Univ. Press.
Lua i Stíl Chicago (17ú heag.)GASS, Susan M. [ ed.]. Linguistic Perspectives on Second Language Acquisition. New York: Cambridge Univ. Press, 1990.
Lua MLA (9ú heag.)GASS, Susan M. [ ed.]. Linguistic Perspectives on Second Language Acquisition. Cambridge Univ. Press, 1990.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.