MLA

Giroux, Instruments d'Ophtalmologie, and John E. Lane. Ophthalmoscope Instruments. 19AD. https://collections.library.yale.edu/catalog/17319717.

APA, 6th edition

Giroux, I. d'O., & Lane, J. E. (19 C.E.). Ophthalmoscope instruments [Artifacts]. https://collections.library.yale.edu/catalog/17319717.