Citazione Stile APA (7a Edizione)
Piper, T. (2001). And then there were two: Children and second language learning. Pippin Pub..
Citazione stile Chigago Style (17a edizione)
Piper, Terry. And Then There Were Two: Children and Second Language Learning. Toronto: Pippin Pub., 2001.
Citatione MLA (9a ed.)
Piper, Terry. And Then There Were Two: Children and Second Language Learning. Pippin Pub., 2001.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.