Citazione APA

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

Stile di citazione Chicago

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

Citazione MLA

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

Attenzione: Queste citazioni potrebbero non essere precise al 100%.