[mzs]

>If we cite anonymous sources in a story, say how these people are in a position to know the information, without compromising their identities. Any anonymously sourced story must be reviewed by senior managers.

p. 112; The Bloomberg Way: A Guide for Journalists; John Micklethwait, Paul Addison, Jennifer Sondag, Bill Grueskin; John Wiley & Sons; 2017 ed.