Robert W. Edwards. The Vale of Kola: A Final Preliminary Report on the Marchlands of Northeast Turkey // Dumbarton Oaks Papers. — 1988. — Т. 42. — С. 119. — ISSN0070-7546.
Оригинальный текст (англ.)
The name Göle is derived from the Georgian designation for the area's major medieval settlement, Kola
