APA
Harrington J. M., Gill F. S., . (1992). Occupational health. London: Blackwell Scientific Publ.
Chicago
Harrington J M, Gill Frank S, . 1992. Occupational health. London: Blackwell Scientific Publ.
Harvard
Harrington J. M., Gill F. S., . (1992). Occupational health. London: Blackwell Scientific Publ.
MLA
Harrington J M, Gill Frank S, . Occupational health. London: Blackwell Scientific Publ. 1992.