Rianto A, Pratama AR. SENTIMENT ANALYSIS OF COVID-19 VACCINATION POSTS ON FACEBOOK IN INDONESIA WITH CROWDTANGLE. J. Ris. Inform. [Internet]. 2021 Sep. 30 [cited 2025 Dec. 30];3(4):353-62. Available from: https://ejournal.kresnamediapublisher.com/index.php/jri/article/view/101