Đặng Thị Thu Trang. (2012). A Study on Ways Expressing Politeness in Bad news Business Letters in English.
Trích dẫn kiểu ChicagoĐặng Thị Thu Trang. A Study On Ways Expressing Politeness in Bad News Business Letters in English. 2012.
MLA引文Đặng Thị Thu Trang. A Study On Ways Expressing Politeness in Bad News Business Letters in English. 2012.
警告:這些引文格式不一定是100%准確.