APA (7th ed.) Citation

George, K. O., & Kiesler, K. (1998). Old Elm speaks: Tree poems. Clarion Books.

Chicago Style (17th ed.) Citation

George, Kristine O'Connell, and Kate Kiesler. Old Elm Speaks: Tree Poems. New York: Clarion Books, 1998.

MLA (9th ed.) Citation

George, Kristine O'Connell, and Kate Kiesler. Old Elm Speaks: Tree Poems. Clarion Books, 1998.