MLA

Rowney, and printmaker Forster. A Faithul Sketch of the Conspirators' House, Cato Street, Marylebone. : with a Ground-Plan of the Loft & Room Where Smithers Was Murdered, Feb. 23, 1820. Published by Rowney & Proser 51 Rathbone Place London, Printed by F. Moser, 0AD. https://collections.library.yale.edu/catalog/33300090.

APA, 6th edition

R., & Forster, printmaker. (0 C.E.). A faithul sketch of the conspirators' house, Cato Street, Marylebone. : with a ground-plan of the loft & room where Smithers was murdered, Feb. 23, 1820 [Lithographs, Annotations (Provenance) 19th century]. Published by Rowney & Proser 51 Rathbone Place London, Printed by F. Moser. https://collections.library.yale.edu/catalog/33300090.