As payment for retrieving the princess's ball, the frog exacts a promise which the princess is reluctant to fulfill.

שם הספר
Grimms' Fairy Tales (Puffin Classics)
Selected Tales (Oxford World's Classics)
Snow-White and the Seven Dwarfs (Sunburst Book)
The Annotated Brothers Grimm (The Annotated Books)
Grimms' Fairy Tales (Illustrated Junior Library)