Setiyawan, A. 2015. Improving Students’ Vocabulary Mastery By Using Flash Card At Forth Grade Students In SDN Lawangan Daya 2 Pamekasan. Wacana Didaktika. 3, 2 (Dec. 2015), 83–91. DOI:https://doi.org/10.31102/wacanadidaktika.3.2.83-91.