Sheldon's JOURNAL.
The Big Bang Theory Season 3, Episode 13
Research JOURNAL, entry one.
The Big Bang Theory Season 3, Episode 10
- Really? Your potty-training JOURNAL?
- Yeah.
The Big Bang Theory Season 6, Episode 3
No, that's my potty-training JOURNAL.
The Big Bang Theory Season 6, Episode 3
But I did write it in my JOURNAL.
The Big Bang Theory Season 9, Episode 9