
And for future REFERENCE,
it's this.
The Big Bang Theory Season 5, Episode 12

For future REFERENCE,
if I want to watch Mean Girls,
The Big Bang Theory Season 9, Episode 11

What REFERENCE?
The Big Bang Theory Season 8, Episode 19

If you ever need a REFERENCE
or anything, just let me know.
The Big Bang Theory Season 9, Episode 23

...you'd be in a non-inertial
REFERENCE frame and would...
The Big Bang Theory Season 1, Episode 3