"Symptoms of deep-thinking" [graphic] : "sinking from thought to thought, a vast profund".
MLA
Gillray, James, 1756-1815, printmaker. "Symptoms of deep-thinking" [graphic] : "sinking from thought to thought, a vast profund".. 1800 March 25. https://collections.library.yale.edu/catalog/11860994.
APA, 6th edition
Gillray, James, 1756-1815, printmaker. (1800 March 25)["Symptoms of deep-thinking" [graphic] : "sinking from thought to thought, a vast profund".]. https://collections.library.yale.edu/catalog/11860994.