Asty, H., Kemal, E., ., S., & ., A. (2019). Design and Development Stage of Interactive CD-Based Audio Visual Media Development for Improving the Listening Skill on Listening Subject in STKIP PGRI West Sumatera. KnE Social Sciences, 3(14), 332–339. https://doi.org/10.18502/kss.v3i14.4319