MLA

Lusus Natuae a Curious Petrifaction Dedicated to the Royal Society. [Graphic]. To be had at the Acorn facing Hungerford, Strand, 0AD. https://collections.library.yale.edu/catalog/10714633.

APA, 6th edition

Lusus natuae a curious petrifaction dedicated to the Royal Society. [graphic]. (0 C.E.). [Caricatures and cartoons, Satires (Visual works), Etchings England London 1756, Book illustrations]. To be had at the Acorn facing Hungerford, Strand. https://collections.library.yale.edu/catalog/10714633.