Thuy, Do Thi Bich. 2018. “VALIDITY ANALYSIS OF 2A + 2B GRAMMAR - VOCABULARY TESTS AT THE FACULTY OF FRENCH LANGUAGE AND CULTURE, UNIVERSITY OF LANGUAGES AND INTERNATIONAL STUDIES - VIETNAM NATIONAL UNIVERSITY, HANOI”. VNU Journal of Foreign Studies 34 (6). https://doi.org/10.25073/2525-2445/vnufs.4326.