Roland, R. ., Darmawan, D. and Budi, B. . (2025) “CORRELATION BETWEEN VOCABULARY MASTERY AND SPEAKING ABILITY OF UNDERGRADUATE STUDENTS AT TADULAKO UNIVERSITY”, e-Journal of ELTS (English Language Teaching Society), 13(2), pp. 1128–1138. doi: 10.22487/elts.v13i2.4635.