Gaya APA
Greenberg, M, I. (2003).
Occupational, Industrial, and Environmental Toxicology Bk. 3 (2nd Ed.).
USA:
mosby el sevier.
Gaya MLA
Greenberg, Michael, I..
"Occupational, Industrial, and Environmental Toxicology Bk. 3".
2nd Ed.
USA:
mosby el sevier,
2003.
Text.