From "END OF THE LINE" (Traveling Wilburys): "Maybe somewhere down the road when somebody plays Purple Haze."
Also, The Beatles' "GLASS ONION" mentions "O-Bla-Dee Oh-Bla-Da"(however you spell that) and makes reference to "I am the Walrus."
Which set me to thinking: is there another example of a song that refers to another song that was written by the same person? (You'd never know I majored in English) Anyhow, I can think of one other:
"SARA" by Bob Dylan:
Stayin' up for days
In the Chelsea Hotel
Writin' "Sad-Eyed Lady
Of the Lowlands" for you.
Any others?