The phrase "influential source" is correct and usable in written English.
You can use it when referring to a person, organization, or piece of information that has a significant impact on a particular field or topic.
Example: "The research paper cited several influential sources that shaped the current understanding of climate change."
Alternatives: "key reference" or "significant contributor."
An influential source of inspiration for Platel is German dance theatre icon Pina Bausch.
Breitbart will become "an influential source for the mainstream media to find out what's going on inside the White House".
McDonnell's involvement with the group was first disclosed by Health Policy Insight, an influential source of NHS analysis.
For the growing number of Iraqis with satellite dishes, the most influential source of news may be Al Jazeera.
"You call these things a riddle," my influential source said, "and I guess that is what they are.
The event was cosponsored by Sina, the nation's biggest web portal and the host of the Weibo microblog - China's twitter, which is an increasingly influential source of news.
In particular, fellow GPs and national guidance were influential sources of information.
Facebook and Twitter are increasingly influential sources of news for their users, according to a survey conducted by the US-based Pew Research Center.
Mummery's book My Climbs in the Alps and Caucasus (1895) remains one of the most influential sources on mountaineering.
Mostly instrumental, with vocals used as sampled, rhythmic motifs, Freak Out/Starry Eyes demonstrates Murphy's gift for selecting the most unlikely influential sources while infusing a track with his own gift for melody and pop hook creation.
The corporate investigator, who is not named in the report, said his information is based on influential sources, including three people in the Beijing office responsible for overseeing Macau and Hong Kong affairs, two Chinese foreign ministry sources and powerful Chinese businessmen with close ties to Beijing.
