Husni Ayustia, Selamat Pohan. ISLAMIC CHARACTER DEVELOPMENT STRATEGY THROUGH 5S CULTURE (SMILE, GREETING, SALAM, POLITE, COURTESY) FOR STUDENTS AT SMP MUHAMMADIYAH 07 MEDAN. MORFAI [Internet]. 2025 Mar. 3 [cited 2026 May 24];5(4):241-4. Available from: https://radjapublika.com/index.php/MORFAI/article/view/2565