A thesis or dissertation is a lengthy work written and presented in support of candidature for an academic degree or professional qualification. It presents the author’s original research and findings on a specific topic. The term “thesis” is generally used at the master’s level, while “dissertation” is typically reserved for doctoral work. Theses and dissertations are considered scholarly sources.
Most theses and dissertations, especially those written recently, are available online. For this reason, the term ETDs (electronic theses and dissertations) has become increasingly common.