एपीए उद्धरण

Doãn Hải Quỳnh. (2011). An investigation into grammatical errors in speaking performance of 10th grade student’s at Phan Chau Trinh hinh school.

शिकागो स्टाइल उद्धरण

Doãn Hải Quỳnh. An Investigation Into Grammatical Errors in Speaking Performance of 10th Grade Student’s At Phan Chau Trinh Hinh School. 2011.

एमएलए उद्धरण

Doãn Hải Quỳnh. An Investigation Into Grammatical Errors in Speaking Performance of 10th Grade Student’s At Phan Chau Trinh Hinh School. 2011.