Cite

[Distant view of river and its banks, distinct tree on horizon]. Y-1221

MLA

Blazer, Charlotte Pinkerton, McClintock, Walter, 1870-1949. [Distant view of river and its banks, distinct tree on horizon]. Y-1221. Lantern slides box 12. undated. https://collections.library.yale.edu/catalog/2010810.

APA, 6th edition

Blazer, Charlotte Pinkerton, & McClintock, Walter, 1870-1949. (["Lantern slides box 12"])(undated)[[Distant view of river and its banks, distinct tree on horizon]. Y-1221]. https://collections.library.yale.edu/catalog/2010810.