It is important to use evidence to support your claims that is generally accepted as authoritative in that context. When writing for an academic audience, usually you want to use either primary sources or other scholarship (secondary sources) as evidence. Scholarly sources can usually be identified by their publishing sources (look for university presses, for example). In particular, when it comes to articles, you want to find articles published in peer-reviewed journals. Most of our databases allow you to narrow search results to peer-reviewed journals, so look for that option.