Authority in the field
Please, click on this to watch this YouTube video from UIUC.
Giving credit to the original author of thoughts, words, and ideas is an important ethical concept.
Citation Builder : illustrates differences among several major styles of citing information sources. from NCSU
CiteUlike : free service for managing and discovering scholarly references
Mendeley : free way to manage your research
Zotero : free, easy to use Firefox extension to help you collect, manage, and cite your research sources.