Não informado. (1976). Occupational Health and Safety. Stevens Publishing.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Occupational Health and Safety. Waco, Tex: Stevens Publishing, 1976.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Occupational Health and Safety. Stevens Publishing, 1976.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.