Cite

Vetvs aqvilae signvm in aedibvs Horatii Walpole Londini [graphic]

MLA

Grignion, Charles, 1721-1810, printmaker. Vetvs aqvilae signvm in aedibvs Horatii Walpole Londini [graphic]. [1755?]. https://collections.library.yale.edu/catalog/16193139.

APA, 6th edition

Grignion, Charles, 1721-1810, printmaker. ([1755?])[Vetvs aqvilae signvm in aedibvs Horatii Walpole Londini [graphic]]. https://collections.library.yale.edu/catalog/16193139.