Aries Ferdhita Hariawan, Nanik Kustiningsih, and Sundjoto, “The Effect of Leadership Education and Training on Structural Promotion: the Mediating Role of Competence Among Civil Servants in the Indonesian National Police”, JURAGAN, vol. 3, no. 1 (Spesial Issue), pp. 874–882, Jan. 2026, doi: 10.62710/g9bv5n74.