The phrase "authentic sources" is correct and usable in written English.
It can be used when referring to reliable and genuine references or materials, often in the context of research or information gathering.
Example: "For your research paper, make sure to cite authentic sources to support your arguments."
Alternatives: "genuine sources" or "reliable sources".
The French word, less well known, was "ressourcement" -- the recovery of authentic sources in Catholic tradition that had been obscured or buried over time.
I may add that editorial teams responsible for monitoring these websites have developed important expertise that enable us to identify authentic sources from non-authentic ones.
This systematic approach resulted in 1868 in a groundbreaking two-volume publication: "Photographic Views of Japan With Historical and Descriptive Notes, Compiled From Authentic Sources and Personal Observation During a Residence of Several Years".
Each unit contains three multiple-genre readings adapted from authentic sources such as newspapers, magazines, books, and websites.
Since self-archiving is extremely sporadic, this repository is compiled from several identified, authentic sources by extracting metadata by constructing a suitable search strategy.
There are several authentic sources of data for thermophysical properties of cryogenic fluids; but many of them do not cover the entire useful range of pressure and temperature.
Book II introduces a new line of kings not mentioned in any other authentic source, starting with Pratapaditya I and ending with Aryaraja.
Exaggerated human rights reports, published by an organisation closely linked to the UIC, have been used as an authentic source by many media outlets without independent scrutiny.
But much of "Were You Always an Italian?" is about Ms. Laurino's gradual realization that Northern Italian culture, although attractive and stylish, was not the authentic source of her heritage.
There are a few good spots to sample a tasty, traditional New York chocolate egg cream, but the best and most authentic source is the weird pool mysteriously bubbling up out of the basement of the Gracie Mansion.
It requires a rare degree of genius for artists to respond to the challenge of indigenous art and to access it as an authentic source of imaginative energy for their own work.
