Ali Ahmed, I. and Salih, H.S. 2025. An Empirical Investigation into Effectiveness correlate of Transactional Leadership and Nurses Staff variants in Kirkuk city hospitals: An analytical study of leadership impact on nursing performance and organizational outcomes". Journal of Current Medical Research and Opinion. 8, 04 (Apr. 2025), 4113–4121. DOI:https://doi.org/10.52845/CMRO/2025/8-4-10.