Cita APA

Đặng Thị Phương Trang. (2012). A Study on Ways Expressing Politeness in Bad news Business Letters in English. Khoa Anh CN.

Chicago Style Citation

Đặng Thị Phương Trang. A Study On Ways Expressing Politeness in Bad News Business Letters in English. Khoa Anh CN, 2012.

Cita MLA

Đặng Thị Phương Trang. A Study On Ways Expressing Politeness in Bad News Business Letters in English. Khoa Anh CN, 2012.