APA: 
Petrič, Miha, Plešnik, Boštjan (2019). Safe cholecystectomy-prevention of the bile duct injury. 
Surgery and surgical endoscopy, letnik 2, številka 1, suppl., str. 58-59. 
URN:NBN:SI:doc-8JJFGU7O from http://www.dlib.si
 
                           MLA: 
Petrič, Miha, Plešnik, Boštjan. "Safe cholecystectomy-prevention of the bile duct injury." 
Surgery and surgical endoscopy letnik 2. številka 1. suppl. (2019) str. 58-59.
<http://www.dlib.si/?URN=URN:NBN:SI:doc-8JJFGU7O>