Sulistyoningsih, Ida Ayu, dkk. “The Influence of Productive Subjects on The Implementation of Practice Internship In Class XI DPIB Islam Vocational School 1 Blitar”. Jurnal Pendidikan Teknik Sipil, vol. 5, no. 2, Desember 2023, hlm. 73-83, doi:10.21831/jpts.v5i2.66730.