APA
(1997). Journal of occupational and Environment medicine. Los Angeles: American college of Occupational and Environment medicine.
Chicago
1997. Journal of occupational and Environment medicine. Los Angeles: American college of Occupational and Environment medicine.
Harvard
(1997). Journal of occupational and Environment medicine. Los Angeles: American college of Occupational and Environment medicine.
MLA
Journal of occupational and Environment medicine. Los Angeles: American college of Occupational and Environment medicine. 1997.
