R. B. Setiyaji and R. F. Nasution, “The Effect of Safety Glass Usage on Vision Impairment in Welding Workers in PT. Jaya Teknik Indonesia South Jakarta Year 2018: Raditya Bagus Setiyaji, Revie Fitria Nasution”, J. Persada Husada Indones., vol. 6, no. 21, pp. 25–35, Apr. 2019.