Primary sources are authorative, original, first-hand accounts of an event, discovery or new information. They are usually created at the time of the event or the first appearance of an original idea or research.
Examples of primary resources include:
Secondary sources describe, discuss, interpret, comment upon, analyze, evaluate or summarise primary sources. They may be a commentary or evaluation of other sources to persuade the reader, or they may be a description of explanation of other sources.
Examples of secondary sources include: