Choosing sources is essentially comparison shopping. Give thought to the basis for comparison. When buying a cellphone you consider cost, storage, size, operating system, and so on.
What features can you weigh and compare when it comes to articles for a research project?
Who wrote it, for whom, and why?
How does this source compare with the other possible sources I have found? In what ways is it similar and different?
What’s unique about this source? What does the article/source say - offer - that other sources do not?
Does it add a new voice? Additional details? New reasons? Alternative points of view? Explanations or interpretations?
What is the author's intention/purpose? What is his or her perspective on the given topic?
Select the minimum required sources plus 1-2.
Evaluate the relative usefulness of sources in context of your topic and its subtopics. For each subtopic, record brief comments about what each source adds to your understanding of the topic.