Who wrote the source? What can you find out about their credentials?
What is the publication or publisher that published this source? Who do you think is its intended audience? Who might read it and why? Is it peer-reviewed, and how can you tell?
What kinds of documentation/citation of evidence appear in the source?
Discussion
Which fits the category of "peer-reviewed scholarly source"?
Any of these sources could have a use. In what ways is the source you looked at useful? Why would you read one or the other?