Juwanda J, Zulaeha I, Mardikantoro HB, Yuniawan T. Characteristics of Indonesian Teaching Materials for Foreign Speakers for the Business Communication Purposes. ISET [Internet]. 2023 Sep. 8 [cited 2024 May 15];9(1):389-95. Available from: https://proceeding.unnes.ac.id/ISET/article/view/2449