KUŠAR, Urška; BERNARD VUKADIN, Barbara; KOVAČ, Nataša. Environmental indicators in Slovenia. 1st ed.. Ljubljana : Ministry of Agriculture and the Environment, Slovenian Environmental Agency (ARSO), 2014. 96 str.. http://nfp-si.eionet.europa.eu/publikacije/Datoteke/Kazalci%20okolja%20v%20Sloveniji/Kazalciokoljavsloveniji_en.pdf. ISBN 978-961-6324-53-3.