Haryanti, B., I. Subari, and S. Wahyuningsih. “IMPROVING STUDENTS’ VOCABULARY MASTERY THROUGH FLASHCARD AT SD Xaverius 1 BANDAR LAMPUNG”. Journal of English Education Students (JEES), vol. 3, no. 1, June 2021, pp. 1-11, https://stkippgribl.ac.id/eskripsi/index.php/jees/article/view/165.