Ruiz Zafón, C., & Graves, L. (2017). The labyrinth of the spirits: A novel (First U.S. edition.). Harper, an imprint of HarperCollinsPublishers.
Chicago Style (17th ed.) CitationRuiz Zafón, Carlos, and Lucia Graves. The Labyrinth of the Spirits: A Novel. First U.S. edition. New York: Harper, an imprint of HarperCollinsPublishers, 2017.
MLA (9th ed.) CitationRuiz Zafón, Carlos, and Lucia Graves. The Labyrinth of the Spirits: A Novel. First U.S. edition. Harper, an imprint of HarperCollinsPublishers, 2017.
Warning: These citations may not always be 100% accurate.