FIDAYANA, Ristia Asri; 						WIRAWAN, Teguh; 						PANGGABEAN, Aman Sentosa.
 VALIDATION OF ION SELECTIVE ELECTRONIC METHODS AT PUPUK KALIMANTAN TIMUR COMPANY FOR DETERMINING AMMONIA LEVELS (NH3) IN AMBIENT AIR.
<strong>JURNAL KIMIA MULAWARMAN</strong>, [S.l.], v. 19, n. 1, p. 1-7, nov. 2021.
ISSN 2476-9258.
Available at: &lt;<a href="http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/842" target="_new">http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/842</a>&gt;. Date accessed: 03 may 2024.
doi: <a href="https://doi.org/10.30872/jkm.v19i1.842">https://doi.org/10.30872/jkm.v19i1.842</a>.