APA引文

Langan, J. (2006). English skills. Boston, MA: McGraw-Hill.

Trích dẫn kiểu Chicago

Langan, John. English Skills. Boston, MA: McGraw-Hill, 2006.

MLA引文

Langan, John. English Skills. Boston, MA: McGraw-Hill, 2006.

警告:這些引文格式不一定是100%准確.