MLA

Rowlandson, Thomas, and A. C. Pugin. Exhibition Room, Somerset House. R. Ackermann's Repository of Arts, 0AD. https://collections.library.yale.edu/catalog/2006566.

APA, 6th edition

Rowlandson, T., & Pugin, A. C. (0 C.E.). Exhibition Room, Somerset House [Illustrations]. R. Ackermann's Repository of Arts. https://collections.library.yale.edu/catalog/2006566.