^Croatian Bureau of Statistics (2007-04-02). "Nacionalna klasifikacija prostornih jedinica za statistiku (NKPJS)". Narodne novine (in Croatian) (35/07). Retrieved 2012-04-15.
^ a b cCroatian Bureau of Statistics (2019-12-09). "Nacionalna klasifikacija statističkih regija 2021. (HR_NUTS 2021.)". Narodne novine (in Croatian) (125/2019). Retrieved 2021-08-10.
^Correspondence between the regional levels and the national administrative units