Afiliany A, Ahmad Suryawan, Rize Budi Amalia. The Relationship Between Age and Level of Knowledge About Menstruation and Readiness for Menarche in Grade IV - VI Female Students at Kertajaya Elementary School . PHJ [Internet]. 2025 Mar. 6 [cited 2025 Mar. 14];7(1):261-9. Available from: https://ojsstikesbanyuwangi.com/index.php/PHJ/article/view/1068