There wasn't a single reference to Baltimore in that note.

This single reference has been expanded upon by a number of other authors and performers.

But there was not a single reference to religion, even as part of the Pilgrims' lives.

T1 and B1 together are referred to as L1, a combined history of recent single references.

Not a single reference to brain worms could I find.

There was not a single reference to the trial or the execution in Soviet newspapers.

The letter writer makes allegations without giving a single historical reference.

The last five digits are the unique single reference for the single.

"You're the one who questioned that single reference, and that's what brought us to the brightest moment of our current mission."

Often intertextuality is more complicated than a single reference to another text.