Não informado. (2018). Monthly Review. Department of Labor, Division of Industrial Hygiene.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Monthly Review. Albany, NY: Department of Labor, Division of Industrial Hygiene, 2018.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Monthly Review. Department of Labor, Division of Industrial Hygiene, 2018.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.