Credible sources
is a birth is certificate a primary source
"A primary source provides direct or firsthand evidence about an event, object, person, or work of art."
What does .edu mean and is it credible
no .co.uk means the standard UK domain name.
what is a secondary source
"A secondary source of information is one that was created later by someone who did not experience first-hand or participate in the events or conditions you're researching."
Is a recording on tv a secondary