‘Wonder’ is a story about a boy who feels ordinary on the inside, but he is always reminded of how different he is by how people respond when they see him. This is R.J Palacio’s first novel and it is written in the first person.
I know it's in first person because August said “My name is August I won’t describe what I look like. Whatever you're thinking it's probably worse.”
Also August said,
“I hung out with Jack in homeroom, English, history,music, and science, which were all the classes we had together.”
August thought the story was funny when the nurse farted. He said,
“I like when mom tells this story because it makes me laugh so much.”
Therefor I think that R.J Palacio wrote it in the first person in the novel ‘Wonder.