Phan, T. M. T. (2013). The impacts of using visual aids on efl high school students' selected grammar points retention: Master of education. Program: Principle and methods in english language education. Cần Thơ: Đại học Cần Thơ.
Čikaški stil citiranjaPhan, Thị Mộng Thuỳ. The Impacts of Using Visual Aids On Efl High School Students' Selected Grammar Points Retention: Master of Education. Program: Principle and Methods in English Language Education. Cần Thơ: Đại học Cần Thơ, 2013.
MLA način citiranjaPhan, Thị Mộng Thuỳ. The Impacts of Using Visual Aids On Efl High School Students' Selected Grammar Points Retention: Master of Education. Program: Principle and Methods in English Language Education. Cần Thơ: Đại học Cần Thơ, 2013.