An interview with the French ambassador about diplomacy in France would be considered a secondary source.
A. primary source documents
interview of Vietnam veteran
A television programme or a live interview would be an example of a non-written source.
You would consult a primary source for a first and personal view of an historical event. Primary sources are original materials.
An interview with a witness to a historical event would be the best example of a primary source, as it provides firsthand information from someone who experienced the event.
The readers guide to periodical literature
The most reliable source on topography in the United States is the U.S. Geological Survey.
A suit would be best for an interview.
It will be your fitness or gym trainer.
to corroborate a given primary source's claim about an event
You would consult a primary source for a first and personal view of an historical event. Primary sources are original materials.