Although we may casually share clips of content with friends in our online world, this doesn't apply to serious academic inquiry.
Giving credit at every opportunity to the work of others in academic writing is essential to show how we develop arguments and viewpoints. Because we build on the work of others in order to form new knowledge, we must cite the work that came before us to help readers understand how we reached our conclusions.
Cartoon via grammarly
Not every statement in your writing needs to be cited. Every discipline has a generally accepted definition of what is considered "common knowledge" in that discipline, and those statements need not be attached to a citation.
This handy flowchart can help you decide.
Consult with your instructor or TA if you're uncertain of what would be considered common knowledge and what would need to be accompanied by a citation to a supporting source.
Review the graphic below to see why University of Toronto instructors and administrators think it's important for students to understand how to cite sources.
Watch the video below (1:54 min) for an introduction to citations.
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