MLA

The Blue Devils! [Graphic]. Pub by Sidebotham Sackville St. Publisher & importer of Caricatures--NB--the greatest variety in Europe constantly on sale, 0AD. https://collections.library.yale.edu/catalog/17338606.

APA, 6th edition

The blue devils! [graphic]. (0 C.E.). [Etchings]. Pub by Sidebotham Sackville St. Publisher & importer of Caricatures--NB--the greatest variety in Europe constantly on sale. https://collections.library.yale.edu/catalog/17338606.