Đỗ, H. T. L. (2010). The effect of using visual aids on teaching english vocabulary at Thot Not high school: Master of education. program: Principles and methods in english language education. Cần Thơ: Trường Đại học Cần Thơ.
Dyfyniad Arddull ChicagoĐỗ, Huỳnh Thảo Lan. The Effect of Using Visual Aids On Teaching English Vocabulary At Thot Not High School: Master of Education. Program: Principles and Methods in English Language Education. Cần Thơ: Trường Đại học Cần Thơ, 2010.
Dyfyniad MLAĐỗ, Huỳnh Thảo Lan. The Effect of Using Visual Aids On Teaching English Vocabulary At Thot Not High School: Master of Education. Program: Principles and Methods in English Language Education. Cần Thơ: Trường Đại học Cần Thơ, 2010.