Edyan, R., Asrial, and Yohanes Gampur. “INFLUENCE OF EDUCATIONAL BACKGROUND ON PRODUCTIVE TEACHER PROFESSIONALISM AT SMK NEGERI 2 KUPANG”. Jurnal Lazuardi, Vol. 8, no. 3, Oct. 2025, pp. 200-13, doi:10.53441/jl.Vol8.Iss3.231.