Read through your articles and look for differences in their titles, structure, length, authors, language, and appearance to help you identify the differences between your popular source and your peer-reviewed journal articles.
The C.R.A.A.P. criteria below are also useful for evaluating and selecting sources for your university assignments:
Currency: The timeliness of the information
Relevance: The information meets your assignment needs
Authority: The source of the information
Accuracy: The reliability and correctness of the information
Purpose: The reason the information exists