STAFF, PEJ.
 Table of Contents.
<strong>Philippine Engineering Journal</strong>, [S.l.], v. 41, n. 1, june 2020.
ISSN 2718-9287.
Available at: &lt;<a href="https://journals.upd.edu.ph/index.php/pej/article/view/7143" target="_new">https://journals.upd.edu.ph/index.php/pej/article/view/7143</a>&gt;. Date accessed: 22 sep. 2025.