Simmons, N. (2009). First friends 1 numbers book. Oxford University Press.
Trích dẫn kiểu ChicagoSimmons, Naomi. First Friends 1 Numbers Book. Oxford University Press, 2009.
Deismireacht MLASimmons, Naomi. First Friends 1 Numbers Book. Oxford University Press, 2009.
Rabhadh: D'fhéadfadh nach mbeadh na deismireachtaí seo 100% cruinn i gcónaí.