APA (7th ed.) Citation

International Congress of Ophthalmology Washington, D. C. (1922). An international congress of ophthalmology, Washington, D.C., April 25,26,27,28,1922. [The Conference?].

Chicago Style (17th ed.) Citation

International Congress of Ophthalmology Washington, D. C. An International Congress of Ophthalmology, Washington, D.C., April 25,26,27,28,1922. Washington, D.C.: [The Conference?], 1922.

MLA (8th ed.) Citation

International Congress of Ophthalmology Washington, D. C. An International Congress of Ophthalmology, Washington, D.C., April 25,26,27,28,1922. [The Conference?], 1922.