There is no reliable authority for this claim.

Newhall's study of warfare in 1924 remains a reliable authority on the battle tactics and events.

There is no reliable authority for the Acts and martyrdom of this saint.

None have been found since by a reliable authority, so they are considered extinct from North America.

I have it on reliable authority that poachers' ballsacs cure old age.

The opinion does not however have widespread support as a reliable authority.

It is marketed as a reliable authority, but sometimes overlooks current terminology.

So even if the doctor were here, he would hardly be a reliable authority.

And on the basis of a reliable authority, all consumers can acquire confidence in European food.

Is that the reliable authority that the European Union wants to be?