authority
from good hands
fountainhead
knowingly
source materials
fine-toothed
Wikipedia
encyclopedic
encyclopaedic
Harvard format
information space
alveary
publishable
up on
toothcombing
know backwards
informationally
datum
definitive
open source
data point
Rosetta Stone
write the book
revealing
fact check
have something on good authority
educated
know-everything
clued up
chapter and verse
knowledgeable
ABC
pangnostic
standards compliant
well-grounded
in depth
right-hand
domain
fact-check
knowledge base
authoritative
open
knowledge domain
almanac
fundamentals
consubstantiationist
acquaintance
cybrary
enchiridion
every trick in the book