2. Scholarly Journal Articles: Peer-reviewed articles published in academic journals. These provide the most rigorous and reliable information, as they undergo a process of evaluation by other experts in the field.
3. Government Documents and Reports: Official publications from government agencies, offering data, statistics, and policy analyses. These are valuable for factual information and policy contexts.
4. Primary Sources: Original materials created during the time period being studied. Examples include letters, diaries, photographs, interviews, artifacts, and original research data. They provide direct evidence.
5. Credible Websites and Online Databases: While the internet has much unreliable information, reputable sources like those from established organizations (.gov, .edu, .org – though check carefully!), academic databases (e.g., JSTOR, EBSCOhost), and reputable news organizations can provide valuable data and information. Always evaluate the author's credentials and the site's overall credibility.