ĐORĐEVIĆ, Dejan P., ĆOĆKALO, Dragan, SAJFERT, Zvonko in NIKOLIĆ, Milan, 2011, Certain aspects of providing customer satisfaction. [na spletu]. 2011. Vol. 9, no. 1, p. 39–62. [Dostopano 8 april 2025]. Pridobljeno s: http://www.fm-kp.si/zalozba/ISSN/1581-6311/9_039-062.pdf