APA (7th ed.) Citation
O'Keeffe, G., Stieglitz, A., & Greenough, S. (2011). My faraway one: Selected letters of Georgia O'Keeffe and Alfred Stieglitz. Yale University Press : In association with the Beinecke Rare Book and Manuscript Library.
Chicago Style (17th ed.) Citation
O'Keeffe, Georgia, Alfred Stieglitz, and Sarah Greenough. My Faraway One: Selected Letters of Georgia O'Keeffe and Alfred Stieglitz. New Haven [Conn.]: Yale University Press : In association with the Beinecke Rare Book and Manuscript Library, 2011.
MLA (9th ed.) Citation
O'Keeffe, Georgia, et al. My Faraway One: Selected Letters of Georgia O'Keeffe and Alfred Stieglitz. Yale University Press : In association with the Beinecke Rare Book and Manuscript Library, 2011.
Warning: These citations may not always be 100% accurate.