Gaya APA

CIH, W, E, L, P. (2008). 613-Toxicology-Principles-for-the-Industrial-Hygienist . : .

Gaya MLA

CIH, William, E., Luttrell,, PhD,. "613-Toxicology-Principles-for-the-Industrial-Hygienist". : , 2008. Transparency.