"authoritative resource" is correct and it can be used in written English.
You can use it when referring to information from a source that is considered to be reliable and trustworthy. For example, "This authoritative resource provides an abundance of information about the history of the Mayan civilization."
Kathleen Fasanella – who to me is the authoritative resource on the technical aspects of fashion – had a great two part blog series about fit modelling.
The annual nonpartisan report is widely considered the most authoritative resource available to the public on worldwide weapons sales, as opposed to classified studies for the government and military.
The annual study, written by Richard F. Grimmett, a specialist in national defense at the research service, is considered the most authoritative resource available to the public on worldwide weapons sales.
The goal of the site is to become an authoritative resource for everyone in the music industry, from studio musicians and equipment managers to studio execs.
This feature is where the site's real potential lies – if it can establish a hardcore group of professional appraisers for each category, Ztail could become an authoritative resource instead of a casual guide.
While medication labels are considered the authoritative resource for medication information, emerging research suggests that patient-generated health data (PGHD) are a valuable tool to understand the ways in which patients experience medications in real world settings.
The report, updated each year, is one of the most authoritative resources on weapons sales available to the public.
Google and Wikipedia have become the authoritative resources of choice; only 16% of teachers in the Pew survey believed their students would seek the assistance of a librarian.
Citelighter's integration with Questia, then, aims to help students with their various research-related tasks by letting them tap into collections of relevant, authoritative resources rather than rely on Wikipedia.
Currently, these databases are the authoritative resources for plant protein sequences and functional information.
Parents could be offered a list of authoritative resources or readings to explore if they wish.
