- worldhistory.org Triumphal_Arch/
- touropia.com Travel Inspiration
- archunion.ge triumphal arch
- archaeologymag.com encyclopedia/triumphal-arch/
- britannica.com Engineering Civil Engineering
- sgira.org archrevqr.htm
- Alchetron.com Triumphal-arch
- bucharestapartment.net triumphal-arch/
- crystalinks.com romanarches.html