MLA
Blackmore, R. D. (Richard Doddridge), 1825-1900. Clara Vaughan. 1889. Chester W. Topp collection of Victorian yellowbacks and paperbacks. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/9010p2ngzc-cor.
APA, 6th edition
Blackmore, R. D. (Richard Doddridge), 1825-1900. (1889)[Clara Vaughan, 12th edition.]. Chester W. Topp collection of Victorian yellowbacks and paperbacks, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/9010p2ngzc-cor.
Chicago
Blackmore, R. D. (Richard Doddridge), 1825-1900, Clara Vaughan, 1889, Chester W. Topp collection of Victorian yellowbacks and paperbacks, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/9010p2ngzc-cor.