- Centrum ochrany vlkov:https://www.wolfconservationCenter.org
- National Geographic:https://www.nationalgeographic.com
- Obhajcovia divočiny:https://defenders.org
- The Nature Conservancy:https://www.nature.org
- International Wolf Center:https://www.wolf.org
- Fond World Wildlife Fund:https://www.wwf.org
- Wolfquest:https://www.wolfquest.org
- Aljašské ministerstvo rýb a hry:https://adfg.alaska.gov
- Kanadská federácia voľne žijúcich živočíchov:https://cwf-fcf.org