Ayunarendra, Victoria Kesha, Siko Wiyanto, and Ivan Nurdin. 2024. “The Influence of Efficacy and Threat Messages on the Intention to Complete the Covid-19 Booster Vaccination: Experimental Study of University Students”. Journal La Medihealtico 5 (3), 485-94. https://doi.org/10.37899/journallamedihealtico.v5i3.1341.