MLA
Du Boisgobey, Fortune?, 1821-1891. EMU10000453298. Bertha's secret. 1886. Chester W. Topp collection of Victorian yellowbacks and paperbacks. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/815p8czcsd-cor.
APA, 6th edition
Du Boisgobey, Fortune?, 1821-1891. EMU10000453298. (1886)[Bertha's secret]. Chester W. Topp collection of Victorian yellowbacks and paperbacks, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/815p8czcsd-cor.
Chicago
Du Boisgobey, Fortune?, 1821-1891. EMU10000453298, Bertha's secret, 1886, Chester W. Topp collection of Victorian yellowbacks and paperbacks, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/815p8czcsd-cor.