APA: 
Burnik Šturm, Martina, Lojen, Sonja, Markič, Miloš, Pezdič, Jože (2009). Speciation and isotopic composition of sulphur in low-rank coals from four Slovenian coal seams. 
Acta chimica slovenica, letnik 56, številka 4, str. 989-996. 
URN:NBN:SI:doc-TMECDHXU from http://www.dlib.si
 
                           MLA: 
Burnik Šturm, Martina, Lojen, Sonja, Markič, Miloš, Pezdič, Jože. "Speciation and isotopic composition of sulphur in low-rank coals from four Slovenian coal seams." 
Acta chimica slovenica letnik 56. številka 4 (2009) str. 989-996.
<http://www.dlib.si/?URN=URN:NBN:SI:doc-TMECDHXU>