National Science Teachers Association. Environmental Inquiry Leadership Team, ebrary, Inc, Carroll, P., & Trautmann, N. M. (2001). Assessing toxic risk (Teacher ed.). NSTA Press.
Lua i Stíl Chicago (17ú heag.)National Science Teachers Association. Environmental Inquiry Leadership Team, Inc ebrary, Patricia Carroll, agus Nancy M. Trautmann. Assessing Toxic Risk. Teacher ed. Arlington, Va.: NSTA Press, 2001.
Lua MLA (9ú heag.)National Science Teachers Association. Environmental Inquiry Leadership Team, et al. Assessing Toxic Risk. Teacher ed. NSTA Press, 2001.
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