What are two professional organizations related to human service field?

Question

There are many of them. The first ones that come to my mind are the American Medical Association (AMA) and the American Psychological Association (APA).

I also searched Google under the key words "Human Service Organizations" to get these possible sources:

http://www.aphsa.org/Home/home_news.asp
http://www.charitynavigator.org/index.cfm?bay=search.results&cuid=15

I hope this helps. Thanks for asking.

(Broken Link Removed)

http://www.jiskha.com/display.cgi?id=1164774374.1164808082

Can u explain to me why you would work or not work at these sites.