Gaya APA

Gontor, U, D. (2021). JIHOH : Journal of Industrial Hygiene and Occupational Health Vol. 5 No. 2, April 2021 (Vol 5 Issue 2, April 2021). Ponorogo: Universitas Darussalam Gontor.

Gaya MLA

Gontor, Universitas, Darussalam. "JIHOH : Journal of Industrial Hygiene and Occupational Health Vol. 5 No. 2, April 2021". Vol 5 Issue 2, April 2021 Ponorogo: Universitas Darussalam Gontor, 2021. TEXT.