Wiborg sisters by Pierce, New York (Series III)
MLA
Wiborg Sisters by Pierce, New York (Series III). 1908. https://collections.library.yale.edu/catalog/15235577.
APA, 6th edition
Wiborg sisters by Pierce, New York (Series III). (1908). [Black-and-white photographs--20th century.--aat, Group portraits]. https://collections.library.yale.edu/catalog/15235577.