ABIS, Leopoldo V..
 Utilization of Solar Energy in the Philippines.
<strong>Philippine Engineering Journal</strong>, [S.l.], v. 1, n. 1, dec. 2021.
ISSN 2718-9287.
Available at: &lt;<a href="https://www.journals.upd.edu.ph/index.php/pej/article/view/8457" target="_new">https://www.journals.upd.edu.ph/index.php/pej/article/view/8457</a>&gt;. Date accessed: 08 sep. 2025.