MLA
Iron, N. C. (Nathaniel Colchester). The two guards [Volume 5:4]. 1863. Chester W. Topp collection of Victorian yellowbacks and paperbacks. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/351hhmgrtn-cor.
APA, 6th edition
Iron, N. C. (Nathaniel Colchester). (1863)[The two guards [Volume 5:4]]. Chester W. Topp collection of Victorian yellowbacks and paperbacks, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/351hhmgrtn-cor.
Chicago
Iron, N. C. (Nathaniel Colchester), The two guards [Volume 5:4], 1863, Chester W. Topp collection of Victorian yellowbacks and paperbacks, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/351hhmgrtn-cor.