Oregon School Library Information System "OSLIS" is a good source for research and citing your work with the automatic citation maker.
You will need to log in, but it is free to public school teachers. See me, or your school librarian, for user name and password.
http://old.oslis.org/index.php
Education and the Public Interest Center
http://epicpolicy.org/
SEDL
http://www.sedl.org/
http://www.changemag.org/index.html
Change: the magazine of higher learning. Published in Cooperation with The Carnegie Foundation for the Advancement of Teaching.