Unair, I., F.(2020).The Indonesia Journal Of Occupational Safety and Health Vol. 9 No.2 2020 (Vol. 9 No.2 Agustus 2020).Surabaya:FKM Unair.
Gaya MLA
Unair, I., F..The Indonesia Journal Of Occupational Safety and Health Vol. 9 No.2 2020.Vol. 9 No.2 Agustus 2020Surabaya:FKM Unair,2020.Jurnal Nasional.