Septiana PM, Muhtadi I, Sari W. MODALIZATION IN HEALTH PUBLIC SERVICE ADVERTISEMENT: A SYSTEMIC FUNCTIONAL GRAMMAR STUDY. Prologue [Internet]. 2024Mar.31 [cited 2024May21];10(1):217-24. Available from: http://prologue.sastra.uniba-bpn.ac.id/index.php/jurnal_prologue/article/view/159