Links
| Energy Market Regulatory Authority | Ministry of Energy and Natural Resources | Eskişehir Natural Gas Distribution Inc. |
| www.epdk.gov.tr/ | www.enerji.gov.tr/ | www.esgaz.com.tr/ |
| Kolin Construction, Tourizm Industry and Trading Co. Inc. |
İzmir Natural Gas Distribution Inc. | BOTAŞ |
| www.kolin.com.tr/ | www.izmirgaz.com.tr | www.botas.gov.tr |