"Anyone urinating on the ground will be arrested"
MLA
"Anyone Urinating on the Ground Will Be Arrested". 0AD. https://collections.library.yale.edu/catalog/15235000.
APA, 6th edition
"Anyone urinating on the ground will be arrested". (0 C.E.). [Black-and-white photographs]. https://collections.library.yale.edu/catalog/15235000.