Race ground [graphic] / drawn by Rowlandson ; tinted by Alken.
MLA
Alken, Samuel, 1756-1815, printmaker. http://id.loc.gov/authorities/names/n97864144. Race ground [graphic] / drawn by Rowlandson ; tinted by Alken.. [1790 June 1]. https://collections.library.yale.edu/catalog/11791620.
APA, 6th edition
Alken, Samuel, 1756-1815, printmaker. http://id.loc.gov/authorities/names/n97864144. ([1790 June 1])[Race ground [graphic] / drawn by Rowlandson ; tinted by Alken.]. https://collections.library.yale.edu/catalog/11791620.