APA-Zitierstil (7. Ausg.)
Piper, T. (2001). And then there were two: Children and second language learning. Pippin Pub..
Chicago-Zitierstil (17. Ausg.)
Piper, Terry. And Then There Were Two: Children and Second Language Learning. Toronto: Pippin Pub., 2001.
MLA-Zitierstil (9. Ausg.)
Piper, Terry. And Then There Were Two: Children and Second Language Learning. Pippin Pub., 2001.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.