What's not a good source?
Other sources may be tempting and easy to find, but you should avoid using poor sources.
Poor sources include:
- Press releases and promotional material
- Official websites
- Self-published materials, like a CV
- Other Wikipedia articles
While it can be useful to run a web search to help you find good sources (such as books or scholarly articles), it's usually more effective to ask your librarian for help in finding good, scholarly sources.