Correlation between Differentiation Strategy and Cost Leadership of Private Energy Businesses in the Sulaymaniyah City of Kurdistan Iraq. گۆڤاری توێژەر, Soran, Kurdistan regional Government,Iraq, v. 5, n. 2, p. 1295–1328, 2023. DOI: 10.31918/twejer.2252.29. Disponível em: https://journals.soran.edu.iq/index.php/Twejer/article/view/267. Acesso em: 24 sep. 2026.