APA: 
Shaw, Trevor R. (1994). The wider purpose of Martel's visits abroad. 
Acta carsologica, letnik 23, str. 221-231. 
URN:NBN:SI:DOC-PWP890L2 from http://www.dlib.si
 
                           MLA: 
Shaw, Trevor R.. "The wider purpose of Martel's visits abroad." 
Acta carsologica letnik 23 (1994) str. 221-231.
<http://www.dlib.si/?URN=URN:NBN:SI:DOC-PWP890L2>