Answer:
primary source: documents the result of original researche.
: is written by those who have conducted researche.
: includes firsthand information about their methodologies, data, results or conclusions.
Secondary source: summarizes, compares, critiques or interprets the primary source.
Step-by-step explanation:
Primary source is the research articles published in scholarly, peer reviewed journal.
Secondary source is the summarises, critiques or interpretations of primary source.