Different types of resources serve different research needs. Here's some advice to help you decide which resource you should use from this guide:
Consider what kind of information you need: primary or secondary, formal or informal, current or historical, and choose accordingly.
Gray literature refers to research that isn't published in books or journals but can still be very useful. This includes reports from governments, NGOs, and think tanks, conference papers or presentations, theses and dissertations, etc.
Why use it? It often provides current, practical, or hard-to-find information.
(!) Remember to check who wrote it and whether it's credible, since this literature is usually not peer-reviewed.
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