APA (7th ed.) Zitazioa
Spellman, F. R., & Bieber, R. M. (2009). Occupational safety and health simplified for the chemical industry. Government Institutes/Scarecrow Press.
Chicago Style (17th ed.) Zitazioa
Spellman, Frank R., eta Revonna M. Bieber. Occupational Safety and Health Simplified for the Chemical Industry. Lanham, Md.: Government Institutes/Scarecrow Press, 2009.
MLA (9th ed.) Zitazioa
Spellman, Frank R., eta Revonna M. Bieber. Occupational Safety and Health Simplified for the Chemical Industry. Government Institutes/Scarecrow Press, 2009.
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