HENDRA, Ferdiyanto; 						IBRAHIM, Sri Andriani; 						MOHAMAD, Rini Wahyuni.
 Sleep Quality and Learning Concentration in School Age Children.
<strong>Medical and Health Journal</strong>, [S.l.], v. 6, n. 1, p. 40-45, aug. 2026.
ISSN 2807-3541.
Tersedia pada: &lt;<a href="https://jos.unsoed.ac.id/index.php/mhj/article/view/19378" target="_new">https://jos.unsoed.ac.id/index.php/mhj/article/view/19378</a>&gt;. Tanggal Akses: 19 oct. 2026
doi: <a href="https://doi.org/10.20884/1.mhj.2026.6.1.19378">https://doi.org/10.20884/1.mhj.2026.6.1.19378</a>.