National Science Teachers Association. Environmental Inquiry Leadership Team, ebrary, Inc, Carroll, P., & Trautmann, N. M. (2001). Assessing toxic risk (Teacher ed.). NSTA Press.
Chicago-referens (17:e uppl.)National Science Teachers Association. Environmental Inquiry Leadership Team, Inc ebrary, Patricia Carroll, och Nancy M. Trautmann. Assessing Toxic Risk. Teacher ed. Arlington, Va.: NSTA Press, 2001.
MLA-referens (9:e uppl.)National Science Teachers Association. Environmental Inquiry Leadership Team, et al. Assessing Toxic Risk. Teacher ed. NSTA Press, 2001.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.