Nto what genre do both Edgar Allan Poe's "The Philosophy of Composition" and Stephen King's On Writing fall? fiction nonfiction drama poetry

Both works fall under the genre of nonfiction. Edgar Allan Poe's "The Philosphy of Composition" is an essay on the theory of how good writers write when they write well. Stephen King's "On Writing" is a memoir on King's own writing experiences as well as a guide book for those who wish to become writers.