The pattern is in the magazine "Crochet World presents Crochet for babies & kids" Fall 2011. It has a little girl on the front and a little boy on a tricyle.
I used Red Heart knitting worsted, however, if I did it again, I would look for a softer yarn. The Red Heart knitting worsted I had here at home and it was a little stiff. If you can't find the magazine, e-mail me and I'll send you a copy.