VALENCIA, Marshall.
 International Scientific Productivity of Selected Universities in the Philippines.
<strong>Science Diliman: A Journal of Pure and Applied Sciences</strong>, [S.l.], v. 16, n. 1, july 2007.
ISSN 2012-0818.
Available at: &lt;<a href="https://journals.upd.edu.ph/index.php/sciencediliman/article/view/105" target="_new">https://journals.upd.edu.ph/index.php/sciencediliman/article/view/105</a>&gt;. Date accessed: 06 aug. 2025.