Purwati, Yuni, and Riska Darmawati. “Dampak Peer Group Terhadap Kesiapan Menghadapi Menarche Pada Siswi Sekolah Dasar”. Prosiding University Research Colloquium, May 2020, pp. 324-0, https://repository.urecol.org/index.php/proceeding/article/view/1018.