DOLOKSARIBU, Tio; 						PERANGINANGIN, Mori A. Br..
 Hubungan Kebiasaan Sarapan Pagi dengan Konsentrasi Belajar Siswa Sekolah Menengah Pertama.
<strong>Nutrix Journal</strong>, [S.l.], v. 8, n. 2, p. 317-327, oct. 2024.
ISSN 2580-6432.
Available at: &lt;<a href="https://ejournal.unklab.ac.id/index.php/nutrix/article/view/1206" target="_new">https://ejournal.unklab.ac.id/index.php/nutrix/article/view/1206</a>&gt;. Date accessed: 30 july 2025.
doi: <a href="https://doi.org/10.37771/nj.v8i2.1206">https://doi.org/10.37771/nj.v8i2.1206</a>.