We should give the full name of a source and as much information as needed to identify the source and explain why he or she is credible. Where appropriate, include a source's age; title; name of company, organization or government department; and hometown.
If we quote someone from a written document – a report, e-mail or news release -- we should say so. Information taken from the Internet must be vetted according to our standards of accuracy and attributed to the original source. File, library or archive photos, audio or videos must be identified as such.
For lengthy stories, attribution can be contained in an extended editor's note, usually at the end, detailing interviews, research and methodology. The goal is to provide a reader with enough information to have full confidence in the story's veracity.