The phrase "authoritative copy" is correct and usable in written English.
It can be used to refer to a version of a document or text that is considered the most reliable or official.
Example: "Please ensure that all references are made to the authoritative copy of the report to avoid any discrepancies."
Alternatives: "official version" or "definitive copy".
He can now be recognised as the scrivener of the two most authoritative copies of the Canterbury Tales: the Hengwrt manuscript, which is now in the National Library of Wales, and the Ellesmere manuscript, kept in San Marino, California.
Although networked services are desirable to maintain consistency and to focus resources for maintenance (i.e. an authoritative master copy), in practice they are often unable to deliver the speed of response necessary for usability and creating a local copy (a snapshot of a dynamic resource) or developing an independent resource is often the only realistic solution available.
Each site received a copy of an authoritative reference text, Natural Standard 27 and a NHP drug interaction grid 28 (created for the pilot study) to support knowledge in this area.
Understand that any information gleaned in this way is less authoritative than obtaining a certified copy through a state Superior Court.
And where else but here among the shavings, glue, paintbrushes and odd-smelling bottles of varnish would you spy a copy of Debrett's – the authoritative tome on how to say howdy-do to aristos (presumably useful when trying to blag a Hepplewhite).
Do not, by any means, copy or infringe on their authoritative rights.
If CNN is perceived as a legitimate, authoritative "high status" news source, then it copying the youth-orientated content website Upworthy would suggest that said site is actually higher-status again, which would challenge the worldview of many.
A total of 700 copies of questionnaires from two authoritative southern Taiwan medical centers providing the electronic medical record system and the online appointment system service were distributed, among which 590 valid copies were retrieved with a response rate of 84.3%.
A good digital copy of the Origin should be authoritative, clear as to the edition and to the publisher that produced the book represented online, easy to read, and easy to obtain in both digital and print forms.
