APA (7th ed.) Citation

Hopkins, E. (2011). Triangles: A novel (1st Atria Books hardcover ed.). Atria Books.

Chicago Style (17th ed.) Citation

Hopkins, Ellen. Triangles: A Novel. 1st Atria Books hardcover ed. New York: Atria Books, 2011.

MLA (9th ed.) Citation

Hopkins, Ellen. Triangles: A Novel. 1st Atria Books hardcover ed. Atria Books, 2011.