Saragih, Srimis Leini. “Connection Mother’s Knowledge by Giving Tetanus Toxoid Immunization in Rambung Island Plantation Village, Bahorok Health Center in 2021”. Science Midwifery, vol. 10, no. 1, October, Dec. 2021, pp. 425-32, https://www.midwifery.iocspublisher.org/index.php/midwifery/article/view/232.