Cita APA (7a ed.)
Health Reference Center. (1987). Occupational hazards. [Penton, etc.].
Cita Chicago Style (17a ed.)
Health Reference Center. Occupational Hazards. [Cleveland]: [Penton, etc.], 1987.
Cita MLA (9a ed.)
Health Reference Center. Occupational Hazards. [Penton, etc.], 1987.
Precaución: Estas citas no son 100% exactas.