“It’s her,” Klaus said, speaking quietly so Hector wouldn’t hear him.  “I’m sure of it.  Isadora Quagmire wrote this poem.”
“I think so, too,” Violet said.  “I’m positive it’s her handwriting.”
“Blake!” Sunny said, which meant “And the poem is written in Isadora’s distinct literary style!”

A Series of Unfortunate Events: The Vile Village – Lemony Snicket