APA引文

Ireland, S. (2010). PET Direct Workbook with Answers. Cambridge University Press.

Trích dẫn kiểu Chicago

Ireland, Sue. PET Direct Workbook With Answers. Cambridge University Press, 2010.

MLA引文

Ireland, Sue. PET Direct Workbook With Answers. Cambridge University Press, 2010.

警告：這些引文格式不一定是100％准確.