APA-referens

Đặng Thị Hồng Hiệp, & Trần Quang Hải. (2015). An investigation into prepositions in textbooks of english 10, 11, 12 at high schools in viet nam.

Chicago-stil citat

Đặng Thị Hồng Hiệp, och Trần Quang Hải. An Investigation Into Prepositions in Textbooks of English 10, 11, 12 At High Schools in Viet Nam. 2015.

MLA-referens

Đặng Thị Hồng Hiệp, och Trần Quang Hải. An Investigation Into Prepositions in Textbooks of English 10, 11, 12 At High Schools in Viet Nam. 2015.

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