1.   Our sources spoke on condition that they not be named.

2.   A government source spoke to the press today.

3.   Both sources spoke on condition of anonymity, citing the delicacy of the negotiations.

4.   When her imaginary sources spoke, they were so quotable, their words weaved so perfectly into her stories, that the editors became suspicious.

5.   A high-ranking party source spoke on condition of anonymity, as journalists were barred for the first time from approaching the front line.

6.   All the sources spoke on condition of anonymity.

7.   An axle thought to have come from the vehicle was found about two blocks away, said a police source who spoke on condition of anonymity.

8.   Both sources spoke on condition that they not be identified.