What you know can help you :
an introduction to toxic substances.
APA Citation
New York (State). Department of Health. (1991). What you know can help you: an introduction to toxic substances. [Albany, N.Y.]: New York State Dept. of Health.
MLA Citation
New York (State). Department of Health. What You Know Can Help You: an Introduction to Toxic Substances. [Albany, N.Y.]: New York State Dept. of Health, 1991.
Warning: These citations may not always be complete (especially for serials).