Marbun, Susan, Dumaris E. Silalahi, and Herman Herman. “Telling People to Change Their Behaviour Through Implications: An Implicature Analysis on Covid-19 Public Service Announcements in Indonesia”. Elsya : Journal of English Language Studies 3, no. 3 (August 26, 2021): 215-224. Accessed May 7, 2024. https://journal.unilak.ac.id/index.php/elsya/article/view/6336.