एपीए उद्धरण

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

शिकागो स्टाइल उद्धरण

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

एमएलए उद्धरण

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