RizqiM., GustopoD., and SoemantoS. “PENGUKURAN BEBAN KERJA MENTAL SOPIR PADA TRANSPORTASI WISATA DI KOPERASI NELAYAN AL-FARISI KABUPATEN GRESIK”. Jurnal Valtech, Vol. 3, no. 2, Sept. 2020, pp. 19-24, https://ejournal.itn.ac.id/index.php/valtech/article/view/2758.