Irmasari, F. “Level of Airbone Toluene in Work Environment Is Associated With Level of Urine Hippuric Acid in Printing Workers at Rungkut Surabaya”. JURNAL KESEHATAN LINGKUNGAN, vol. 10, no. 3, Dec. 2018, pp. 328-35, doi:10.20473/jkl.v10i3.2018.328-335.