Grey literature refers to materials and research produced outside of traditional academic or commercial publishing channels. It's not found in regular bookstores or academic journals. Think of it as the "unpublished" world of information.
Why is Grey Literature Useful for Your Studies?
Feature | Grey Literature | Academic Sources (Books, Journal Articles) |
Publication process | Informal, non-commercial channels | Rigorous peer-review |
Availability | Can be harder to find, often through specialised sources | Widely available in libraries and online databases |
Authors | Varied: government agencies, NGOs, think-tanks, individuals | Primarily academics and researchers |
Purpose | Diverse: inform, advocate, document | Disseminate scholarly research, contribute to knowledge |
Types of Grey Literature You Might Encounter:
For a more detailed list of different types of grey literature, vist this link at GreyNet.org
Google:
In addition to using Google to find sources of grey literature, you can also use the Advanced Search to search within particular sites or domains as well. This is often more effective than using the site's own search engine, plus you can specify types of files (i.e. most reports and publications will be .PDF files) and date updated.
To search within a particular website using Google Advanced Search, put the domain URL in the 'site or domain' field - for example, .gov.uk/government/organisations/home-office. This will search just within the Home Office. Using .howardleague.org will just search within the website of the Howard League for Penal Reform.
(If you're not sure which part of the URL to use, basically take everything after the www, including the full stop.)
Custom Google Searches:
A number of custom Google searches have been helpfully set up by other librarians and/or librarians.
Custom Google Search: