FADLILLAH, Nilna; 						BAKAR, M. Yunus Abu; 						ASSEGAF, Abd. Rachman.
 Optimizing Human Development: The Relevance of Hasan Langgulung's Concept of Islamic Education in the 21st Century.
<strong>Jurnal Penelitian Pendidikan Islam</strong>, [S.l.], v. 11, n. 1, p. 18-32, dec. 2023.
ISSN 2621-8275.
Available at: &lt;<a href="https://riset-iaid.net/index.php/jppi/article/view/1525" target="_new">https://riset-iaid.net/index.php/jppi/article/view/1525</a>&gt;. Date accessed: 04 sep. 2026.
doi: <a href="https://doi.org/10.36667/jppi.v11i1.1525">https://doi.org/10.36667/jppi.v11i1.1525</a>.