The University of Bir Mingham. (1988). English Language. Cobuild.
Trích dẫn kiểu ChicagoThe University of Bir Mingham. English Language. Cobuild, 1988.
MLA引文The University of Bir Mingham. English Language. Cobuild, 1988.
警告：这些引文格式不一定是100％准确.
APA引文