OCAMPO, Anthony C.; 						OCAMPO, Ma. Luisa D.; 						GALAM, Roderick G..
 Textbuk sa Agham at Matematika.
<strong>Alipato, A Journal of Basic Education</strong>, [S.l.], v. 1, n. 1, dec. 2011.
ISSN 0118-4342.
Available at: &lt;<a href="https://journals.upd.edu.ph/index.php/ali/article/view/2647" target="_new">https://journals.upd.edu.ph/index.php/ali/article/view/2647</a>&gt;. Date accessed: 08 sep. 2025.