Παραπομπή APA

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

Παραπομπή Chicago Style

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

Παραπομπή MLA

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

Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.