Hathaway, G. J., & Proctor, N. H. (2004). Proctor and Hughes' chemical hazards of the workplace. Hoboken, N.J. : Wiley-Interscience.
Lua i Stíl Chicago (17ú heag.)Hathaway, Gloria J., agus Nick H. Proctor. Proctor and Hughes' Chemical Hazards of the Workplace. Hoboken, N.J. : Wiley-Interscience, 2004.
Lua MLA (9ú heag.)Hathaway, Gloria J., agus Nick H. Proctor. Proctor and Hughes' Chemical Hazards of the Workplace. Hoboken, N.J. : Wiley-Interscience, 2004.
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