MLA

Mappa Geographica Regni Hiberniae, Ad Emendatiora Quae Adhuc Prodierunt Exempla Jussu Mad. Reg. Scient. Et Eleg. Litter. Descripta [Graphic]. Leonhard Euler, 0AD. https://collections.library.yale.edu/catalog/16825520.

APA, 6th edition

Mappa geographica regni Hiberniae, ad emendatiora quae adhuc prodierunt exempla jussu mad. reg. scient. et eleg. Litter. descripta [graphic]. (0 C.E.). [Maps Ireland 18th century, Engravings Germany Berlin 1752]. Leonhard Euler. https://collections.library.yale.edu/catalog/16825520.