The name of the third river is the Tigris; it runs along the east side of Ashur. And the fourth river is the Euphrates. (NIV)
The third river is named Hiddekel [the Tigris]; it is the one flowing east of Assyria. And the fourth river is the Euphrates. (AMP)
And the name of the third river is Hiddekel: that is it which goeth toward the east of Assyria. And the fourth river is Euphrates. (KJV)