APA-referens

Nguyễn,Thị Thảo. (2016). A study of language expressions used as politeness strategies in english refusal business letters. ĐHNN.

Chicago-stil citat

Nguyễn,Thị Thảo. A Study of Language Expressions Used As Politeness Strategies in English Refusal Business Letters. ĐHNN, 2016.

MLA-referens

Nguyễn,Thị Thảo. A Study of Language Expressions Used As Politeness Strategies in English Refusal Business Letters. ĐHNN, 2016.

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