DE VILLA, Agerico M..
 An Environment-Related Foreign Policy Direction.
<strong>Philippine Social Sciences Review</strong>, [S.l.], june 2011.
ISSN 2672-3158.
Available at: &lt;<a href="https://www.journals.upd.edu.ph/index.php/pssr/article/view/2125" target="_new">https://www.journals.upd.edu.ph/index.php/pssr/article/view/2125</a>&gt;. Date accessed: 06 aug. 2025.