Não informado. (1994). Occupational and Environmental Medicine. BMJ Publishing.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Occupational and Environmental Medicine. London: BMJ Publishing, 1994.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Occupational and Environmental Medicine. BMJ Publishing, 1994.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.