See:
- Ömür Harmanşah, Place, Memory, and Healing: An Archaeology of Anatolian Rock Monuments, Routledge 2014, p. 89
- idem: Graffiti or Monument? Inscription of Place at Anatolian Rock Reliefs, in: Scribbling through HistoryGraffiti, Places and People from Antiquity to Modernity, Bloomsbury Academic, 2018
- J. G. Macqueenl, The Hittites: And Their Contemporaries in Asia Minor, Thames and Hudson 1989, p.24
- http://www.hittitemonuments.com/karabel/
- https://en.wikipedia.org/wiki/Karabel_relief
