In journalism, a source is a person, publication, or other record or document that gives timely information.
Journalism is the work and distribution of reports on the interaction of events, facts, ideas, and people that are the "news of the day" and that informs society to at least some degree.
Top 10 Cydia Sources for iOS 8.4 (2015) by iDB
Examples of sources include official records, publications or broadcasts, officials in government or business, organizations or corporations, witnesses of crime, accidents or other events, and people involved with or affected by a news event or issue.
A witness is someone who has, who claims to have, or is thought, by someone with authority to compel testimony, to have knowledge relevant to an event or other matter of interest.
According to Shoemaker and McQuail, there are a multitude of factors that tend to condition the acceptance of sources as bona fide by investigative journalists.
Reporters are expected to develop and cultivate sources, especially if they regularly cover a specific topic, known as a "beat".
A journalist is a person who collects, writes, or distributes news or other current information.
For example, sometimes a person will say they don't want to talk, and then proceed to talk; if that person is not a public figure, reporters are less likely to use that information.
Journalists are also encouraged to be skeptical without being cynical as per the saying "If your mother says she loves you, check it out."
popularized by the City News Bureau of Chicago.
City News Bureau of Chicago, or City Press, was a news bureau that served as one of the first cooperative news agencies in the United States.
As a rule of thumb, but especially when reporting on controversy, reporters are expected to use multiple sources.