ČASOPISA, Redakcija.
 Ekonomski indikatori.
<strong>Procesna tehnika</strong>, [S.l.], v. 29, n. 1, p. 54, july 2017.
ISSN 2217-2319.
Dostupno na: &lt;<a href="https://izdanja.smeits.rs/index.php/procteh/article/view/2771" target="_new">https://izdanja.smeits.rs/index.php/procteh/article/view/2771</a>&gt;. Datum pristupa: 20 july 2026