Example: Authority for the program was renewed several times.
source: wordnet30
an authoritative written work(noun.communication)
Example: This book is the final authority on the life of Milton.
source: wordnet30
Legal or rightful power; a right to command or to act; power exercised buy a person in virtue of his office or trust; dominion; jurisdiction; authorization; as, the authority of a prince over subjects, and of parents over children; the authority of a court.(noun)