APA: 
Hrenović, Jasna, Orhan, Yüksel, Büyükgüngör, Hanife (2003). Characterization of enhanced biological phosphorus release and removal by activated sludge. 
Acta chimica slovenica, letnik 50, številka 4, str. 697-714. 
URN:NBN:SI:DOC-E8UL6Y3V from http://www.dlib.si
 
                           MLA: 
Hrenović, Jasna, Orhan, Yüksel, Büyükgüngör, Hanife. "Characterization of enhanced biological phosphorus release and removal by activated sludge." 
Acta chimica slovenica letnik 50. številka 4 (2003) str. 697-714.
<http://www.dlib.si/?URN=URN:NBN:SI:DOC-E8UL6Y3V>