MLA

Martin, Robert, active 1770-1838, printmaker, publisher. A specimen of ink lithography from R. Martin's, 124 High Holborn [graphic].. [1837]. https://collections.library.yale.edu/catalog/33113183.

APA, 6th edition

Martin, Robert, active 1770-1838, printmaker, publisher. ([1837])[A specimen of ink lithography from R. Martin's, 124 High Holborn [graphic].]. https://collections.library.yale.edu/catalog/33113183.