Sourcing Tigger quote

[D_Blackwell]

I have constructed a crossword puzzle in which ABSITIVELY and POSOLUTELY are two theme entries. I need to source and document the usage of Tigger's line: "Abistively, posolutely, splendiferous".

I need the year(s) of the movie(s), and preferably the lines before and after the quote. Who was the voice(s) of the character? Is there any documenting online source(s)?

Any help in documenting the line would be helpful