W. Syafitri and F. S. Artika, “ENGLISH AS LINGUA FRANCA AND ASEAN ECONOMIC COMMUNITY (AEC): A PERSPECTIVE OF ISLAMIC ECONOMY FACULTY IN BUILDING STRONG MUSLIM STUDENTS IN IAIN BUKITTINGGI”, J. Islam. Soc. Stud., vol. 5, no. 1, pp. 71–81, Aug. 2019.