Lambert, N. (2002). English upgrade: Teacher's resource. Oxford: McMillan.
Trích dẫn kiểu ChicagoLambert, Nicholas. English Upgrade: Teacher's Resource. Oxford: McMillan, 2002.
MLA引文Lambert, Nicholas. English Upgrade: Teacher's Resource. Oxford: McMillan, 2002.
警告：這些引文格式不一定是100％准確.