BAMERO, Alma N..
 Opium: The Evolution of Policies, the Tolerance of the Vice, and the Proliferation of Contraband Trade in the Philippines, 1843-1908.
<strong>Social Science Diliman: A Philippine Journal of Society and Change</strong>, [S.l.], may 2011.
ISSN 2012-0796.
Available at: &lt;<a href="https://journals.upd.edu.ph/index.php/socialsciencediliman/article/view/2115" target="_new">https://journals.upd.edu.ph/index.php/socialsciencediliman/article/view/2115</a>&gt;. Date accessed: 09 sep. 2025.