BAETIONG, Lourdes R..
Highlights of the Results of a Survey on the UPIS Concept.
Alipato, A Journal of Basic Education, [S.l.], v. 1, n. 1, dec. 2011.
ISSN 0118-4342.
Available at: <https://www.journals.upd.edu.ph/index.php/ali/article/view/2648>. Date accessed: 03 sep. 2025.