A. Asrifan, L. M. O. de B. Cardoso, and R. Vivekanantharasa, “The Influence of Teacher Professionalism, Motivation, Attitude, and Culture on English Proficiency: Evidence from South Sulawesi, Indonesia”, J. Engl. Lang. Teach. Fak. Pendidik. Bhs. Seni Program Studi Pendidik. Bhs. Ingg. IKIP Mataram, vol. 12, no. 2, pp. 326–344, Dec. 2025.