APA aipamena

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

Chicago Style aipamena

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

MLA aipamena

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

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