Style de citation APA (7e éd.)

Piper, T. (2001). And then there were two: Children and second language learning. Pippin Pub..

Style de citation Chicago (17e éd.)

Piper, Terry. And Then There Were Two: Children and Second Language Learning. Toronto: Pippin Pub., 2001.

Style de citation MLA (9e éd.)

Piper, Terry. And Then There Were Two: Children and Second Language Learning. Pippin Pub., 2001.