MLA
Stephens, Ann S. (Ann Sophia), 1810-1886. Sybil Chase, or, The valley ranche : a tale of California life [Volume 2:4]. 1861. Chester W. Topp collection of Victorian yellowbacks and paperbacks. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/1913n5tck3-cor.
APA, 6th edition
Stephens, Ann S. (Ann Sophia), 1810-1886. (1861)[Sybil Chase, or, The valley ranche : a tale of California life [Volume 2:4]]. Chester W. Topp collection of Victorian yellowbacks and paperbacks, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/1913n5tck3-cor.
Chicago
Stephens, Ann S. (Ann Sophia), 1810-1886, Sybil Chase, or, The valley ranche : a tale of California life [Volume 2:4], 1861, Chester W. Topp collection of Victorian yellowbacks and paperbacks, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/1913n5tck3-cor.