MLA

Weston, J., and Son. Emily Herbert Wife of William George Herbert. 0AD. https://collections.library.yale.edu/catalog/9998488.

APA, 6th edition

Weston, J., & S. (0 C.E.). Emily Herbert wife of William George Herbert [Cartes-de-visite, Photographic prints, Photographs, Studio portraits]. https://collections.library.yale.edu/catalog/9998488.