Sari, Armenia Diah, Indria Laksmi Gamayanti, and Retno Koeswandari. “The Use of Preoperative Education Booklet Media to Decrease Anxiety Level of School-Aged Children”. Journal Of Nursing Practice 2, no. 2 (April 1, 2019): 116–122. Accessed September 11, 2025. https://www.thejnp.org/index.php/jnp/article/view/54.