MLA

Loye, Mina [sic; i.e. Loy, Mina]. Summer night in a Florentine slum. 1920 December. https://collections.library.yale.edu/catalog/2043739.

APA, 6th edition

Loye, Mina [sic; i.e. Loy, Mina]. (1920 December)[Summer night in a Florentine slum]. https://collections.library.yale.edu/catalog/2043739.