APA:
Perko, Drago (1994). The Encyclopedia of world geography.
Geografski obzornik, volume 41, issue 2, str.39.
URN:NBN:SI:DOC-AOKLV3TU from http://www.dlib.si
MLA:
Perko, Drago. "The Encyclopedia of world geography."
Geografski obzornik volume 41. issue 2 (1994) str.39.
<http://www.dlib.si/?URN=URN:NBN:SI:DOC-AOKLV3TU>