LARSEN-FREEMAN, D., & LONG, M. H. (1999). An introduction to second language acquisition research. Longman.
Lua i Stíl Chicago (17ú heag.)LARSEN-FREEMAN, Diane, agus Michael H. LONG. An Introduction to Second Language Acquisition Research. London: Longman, 1999.
Lua MLA (9ú heag.)LARSEN-FREEMAN, Diane, agus Michael H. LONG. An Introduction to Second Language Acquisition Research. Longman, 1999.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.