Grey literature is a valuable source of information, and includes resources typically inaccessible via traditional or commercial publishing.
Consider these key guides and resources that identify sources of grey literature:
Don't forget to check the following for grey literature!
Always document your search methodology when searching grey literature. Details to keep track of include:
Well documenting your search methodology means that you will be able to explain how your results were retrieved. Doing this also allows you to accurately integrate your search approach into a larger piece of writing such as an essay, a poster, your thesis, etc.
Prepare a search plan before you begin to collect and screen documents. Use this template to organize and document your search results.
Often, Google can be the best tool to search for documents and reports published on the web. When recording your search methods, it is important to document the search terms used and the date the searches were performed.
Google Advanced will combine or exclude search terms, limit results by region, file type, i.e. .pdf (helpful when limiting to reports), domain (i.e. .gc.ca)
Google Scholar will retrieve documents from academic and professional sources. Note: You will have to browse through a lot of journal articles to find the grey literature reports. *There is no limit for "grey literature only."*
DuckDuckGo is another search engine like Google. DuckDuckGo does not collect user information, which means your results will not be filtered based on your geographic location.
Link to some useful Google search tips can be found here.
These sources are useful for finding Canadian Government publications:
These sources are useful for finding clinical trials data:
These sources are useful for finding health statistics:
Many universities have institutional repositories, which are online databases of publications by their members. Repositories can include publications by faculty and student dissertations and theses.