MLA

Churchill, G. The Very Rev[Ere]Nd the Hon[Orable] W[Illia]m Herbert L.L.D. Dean of Manchester. 0AD. https://collections.library.yale.edu/catalog/9998521.

APA, 6th edition

Churchill, G. (0 C.E.). The very Rev[ere]nd the Hon[orable] W[illia]m Herbert L.L.D. Dean of Manchester [Annotations, Card photographs, Copy prints, Photographic prints, Photographs]. https://collections.library.yale.edu/catalog/9998521.