A primary source is an original fundamental and authoritative document pertaining to an event or subject of inquiry; a firsthand or eyewitness account of an event. (Dictionary.com)
Examples of primary sources:
- Patient interviews
- Clinical Trials
- Surveys of nursing staff
A secondary source is any document that describes an event, person, place, or thing, usually not created during the same time period. A biography is a secondary source. (Dictionary.com)
Examples of primary sources:
- Evaluations of studies
- A bibliography from a journal article or book
- A narrative of a famous nurse
- Video on nursing skills