1) Bibliography books 2) Bibliography listings 3) Dissertation listing 4) Fonts 5) Footnote data 6) News origin, when unspecific 7) Origins 8) Places of origin 9) Springs 10) They may be anonymous Found on https://www.crosswordclues.com/clue/sources
[website] Sources is a web portal for journalists, freelance writers, editors, authors and researchers, focusing especially on human sources: experts and spokespersons who are prepared to answer Reporters` questions or make themselves available for on-air interviews. ==Structure== The Sources website is built around a controlled-vocabulary ... Found on http://en.wikipedia.org/wiki/Sources_(website)