Janjang Subekti, Purwanto and Sri Rahayu 2026. The Effect of Leadership Style and Mental Competency Guidance on Employee Performance with Work Engagement as a Mediating Variable at the Medium Customs Type, Customs and Excise Controlling and Servicing Office of Juanda. Indonesian Journal of Multidisciplinary Sciences (IJoMS). 5, 1 (Jun. 2026), 1086–1097. DOI:https://doi.org/10.59066/ijoms.v5i1.2564.