APA ציטוט

Brown, V. J. (2012). Why is it So Difficult to Choose Safer Alternatives for Hazardous Chemicals? National Institute of Environmental Health Sciences.

Citação norma Chicago

Brown, Valerie J. Why Is It So Difficult to Choose Safer Alternatives for Hazardous Chemicals? National Institute of Environmental Health Sciences, 2012.

ציטוט MLA

Brown, Valerie J. Why Is It So Difficult to Choose Safer Alternatives for Hazardous Chemicals? National Institute of Environmental Health Sciences, 2012.