Mother, you're the best! (but Sister, you're a pest!) /
Diane deGroat.
- 1st ed.
- New York, NY : HarperCollins Children's Books, c2008.
- 1 v. (unpaged) : col. ill. ; 26 cm.
Gilbert wants to do something special for his mother on Mother's Day, but first he must stop his sister, Lola, from being the center of attention.