APA-referens

 Understanding second language acquisition. (2023).  Understanding second language acquisition.  Routledge.

Chicago-stil citat

 Understanding second language acquisition.  Understanding Second Language Acquisition.  Routledge, 2023.

MLA-referens

 Understanding second language acquisition.  Understanding Second Language Acquisition.  Routledge, 2023.

Varning: dessa hänvisningar är inte alltid fullständigt riktiga.