Alice in Wonderland

Alice in Wonderland was a book from Earth, as well as the general name by which the book and its sequels were collectively known.

The Fifth Doctor once declared that like Alice, he tried to believe three impossible things before breakfast. (DW: The Five Doctors)

Peri Brown had been reading an omnibus edition of Alice in Wonderland aboard the Doctor's TARDIS before accidentally activating the Doctor's personal reality warp. The device transported her to a world largely based on the book. (DWM: ''Salad Daze)

Behind the scenes
The Fifth Doctor was misquoting Alice in The Five Doctors; in the book it's the White Queen, not Alice, who has sometimes believed "as many as six impossible things before breakfast."