Citazione Stile APA (7a Edizione)

Larsen-Freeman, D., & Long, M. H. (1991). An introduction to second language acquisition research. Longman.

Citazione stile Chigago Style (17a edizione)

Larsen-Freeman, Diane, e Michael H. Long. An Introduction to Second Language Acquisition Research. Essex: Longman, 1991.

Citatione MLA (9a ed.)

Larsen-Freeman, Diane, e Michael H. Long. An Introduction to Second Language Acquisition Research. Longman, 1991.