Edyan, R., Asrial and Yohanes Gampur 2025. INFLUENCE OF EDUCATIONAL BACKGROUND ON PRODUCTIVE TEACHER PROFESSIONALISM AT SMK NEGERI 2 KUPANG. Jurnal Lazuardi. 8, 3 (Oct. 2025), 200-213. DOI:https://doi.org/10.53441/jl.Vol8.Iss3.231.