APA Format
Zakrzewski, Sigmund F.
. (1991). Principles of environmental toxicology. Washington, DC : American Chemical Society
MLA Format
Zakrzewski, Sigmund F.
. Principles of environmental toxicology. Washington, DC : American Chemical Society, 1991
Australian/Harvard Format
Zakrzewski, Sigmund F.
. 1991. Principles of environmental toxicology. American Chemical Society, Washington, DC
Warning: These citations may not always be 100% accurate.