PANGGABEAN, Aman Sentosa.
 Prosiding Seminar Nasional Kimia 2015.
<strong>REPOSITORY KIMIA</strong>, [S.l.], dec. 2016.
Available at: &lt;<a href="http://jurnal.kimia.fmipa.unmul.ac.id/index.php/repo/article/view/379" target="_new">http://jurnal.kimia.fmipa.unmul.ac.id/index.php/repo/article/view/379</a>&gt;. Date accessed: 20 apr. 2024.