Conterius, Anastasia Wihelmin Stephanie, and Henny Permatasari. “Sistematic Review: Pengetahuan Vaksin Mempengaruhi Keraguan Lansia Menerima Vaksin Booster Covid 19”. Jurnal Keperawatan 15, no. 3 (April 28, 2023): 1179–1188. Accessed May 19, 2024. http://journal2.stikeskendal.ac.id/index.php/keperawatan/article/view/1016.