Russell, D. (2012) Literature for Children: a short introduction. 7th ed. Pearson
http://www.scholastic.com/teachers/bookwizard/books-by/leo-lionni
http://www.randomhousekids.com/brand/leo-lionni/
http://www.scholastic.com/teachers/bookwizard/books-by/leo-lionni
http://www.randomhousekids.com/brand/leo-lionni/