MLA

Alken, Samuel, 1756-1815, printmaker. A French family [graphic] / T. Rowlandson delin. ; S. Alken fecit.. [n.d.]. https://collections.library.yale.edu/catalog/11791442.

APA, 6th edition

Alken, Samuel, 1756-1815, printmaker. ([n.d.])[A French family [graphic] / T. Rowlandson delin. ; S. Alken fecit.]. https://collections.library.yale.edu/catalog/11791442.