Dhammika, K.A.S., Fais Ahmed, and Lip Sam Thi. “Leadership Effectiveness in Unionized Work Environment: A Study on the Public Sector Organizations in Sri Lanka. ”. Global Business Management Review (GBMR) 2, no. 2 (December 31, 2010): 47–73. Accessed October 16, 2026. https://e-journal.uum.edu.my/index.php/gbmr/article/view/16873.