Ireland, S. (2010). Pet direct: Student's book. Cambridge: Cambridge University Press.
Trích dẫn kiểu ChicagoIreland, Sue. Pet Direct: Student's Book. Cambridge: Cambridge University Press, 2010.
MLA引文Ireland, Sue. Pet Direct: Student's Book. Cambridge: Cambridge University Press, 2010.
警告：這些引文格式不一定是100％准確.