APA引文

Phan Xuân Sơn. (2000). An investigation into in, at, on and to and how they are used by Vietnamese high school learners.

Trích dẫn kiểu Chicago

Phan Xuân Sơn. An Investigation Into In, At, On and to and How They Are Used By Vietnamese High School Learners. 2000.

MLA引文

Phan Xuân Sơn. An Investigation Into In, At, On and to and How They Are Used By Vietnamese High School Learners. 2000.