MLA

Pughe, J. S. (John S.), 1870-1909. An unfortunate effect .... 1900 September 26. https://collections.library.yale.edu/catalog/2057805.

APA, 6th edition

Pughe, J. S. (John S.), 1870-1909. (1900 September 26)[An unfortunate effect ...]. https://collections.library.yale.edu/catalog/2057805.