Sources differ as to whether she was born in 1820 or 1823.

But, he said, the source of the water may differ.

Sources differ as to whether the date was 1912 or 1913.

Though a small unit, sources differ on the numbers involved.

Sources differ as to whether 10 or 20 sites were proposed.

Station count usually the greater of two numbers when sources differ.

While they are often said to be 14 definite points, the sources differ.

Sources differ on when the ship entered service; they give either 1870 or 1873.

Sources are incomplete, and may differ about his published works.

Sources differ on the development history, but the gun itself was of conventional design.