- R.J. Palacio. Wonder. New York: Alfred A. Knopf, 2012.
- "Treacher Collins Syndrome." Genetics Home Reference. June 2012. December 15, 2015. <http://ghr.nlm.nih.gov/condition/treacher-collins-syndrome>.
- Dr. Robyn Sheahan-Bright. "Wonder Teaching Notes." Random House Australia. 2013. November 26, 2015. <http://www.randomhouse.com.au/content/teachers/wonderteachingnotes.pdf>.
- Maria Russo. "Facing Up to It: 'Wonder,' by R.J. Palacio." The New York Times. April 6, 2012. November 21st, 2015. <http://www.nytimes.com/2012/04/08/books/review/wonder-by-r-j-palacio.html?_r=0>.
- "Wonder Lesson Plans." Web English Teacher. 2015. December 2, 2015. <http://www.webenglishteacher.com/palacio.html>.
- Rebecca Otis. "Bullies in Children's Literature." Carol Hurst Children's Literature Site. 2014. December 5, 2015. <http://www.carolhurst.com/subjects/bullies.html>.