APA引文

Kovacs, K. (2012). English for Exams Speaking for Ielts. Nhân Trí Việt.

Trích dẫn kiểu Chicago

Kovacs, Karen. English for Exams Speaking for Ielts. Nhân Trí Việt, 2012.

MLA引文

Kovacs, Karen. English for Exams Speaking for Ielts. Nhân Trí Việt, 2012.

警告：這些引文格式不一定是100％准確.