Ramansyah Hidayat, Retno Susanti, Kun Setiono, Sumarno Sumarno, Dwi Nisa, Nyoman Sumitra. Analysis of the Impact of Competency Certification on Improving Hotel Employee Performance in the Priority Tourism Destination Bromo Tengger Semeru (DPP-BTS): (Case Study of Hotel Front Office Clerks). EKONOMIKA45 [Internet]. 2024 May 22 [cited 2024 Jul. 1];11(2):999-1008. Available from: https://jurnaluniv45sby.ac.id/index.php/ekonomika/article/view/2605