SILVEY, Anita. The Essential Guide to Children's Books and Their Creators. Boston – New York: Houghton Mifflin Company, 2002. 560 s. Dostupné online. ISBN9780547348896. S. 191. (anglicky)
montclair.edu
MATTHEWS, Gareth B. Review: The Shrinking of Treehorn [online]. Montclair State University: Institute for the Advancement of Philosophy for Children [cit. 2024-04-06]. Dostupné online. (anglicky)
nytimes.com
KRAUSS, Jennifer. Gift Books for Children (That Adults Will Also Love). New York Times [online]. 27. 11. 2020 [cit. 6.4.2024]. Dostupné online. ISSN1553-8095. (anglicky)
worldcat.org
KRAUSS, Jennifer. Gift Books for Children (That Adults Will Also Love). New York Times [online]. 27. 11. 2020 [cit. 6.4.2024]. Dostupné online. ISSN1553-8095. (anglicky)