APA:
Nieuwenhuysen, Paul (1989). Scientific and tehnical documentary information in the Unesco International Hydrological Programme.
Knjižnica, volume 33, issue 1.
URN:NBN:SI:DOC-DUZOWJJK from http://www.dlib.si
MLA:
Nieuwenhuysen, Paul. "Scientific and tehnical documentary information in the Unesco International Hydrological Programme."
Knjižnica volume 33. issue 1 (1989).
<http://www.dlib.si/?URN=URN:NBN:SI:DOC-DUZOWJJK>