MLA

The Pioneer Hose Company, Bismarck- Thrice Champions. [Walter F. Cushing, etc.], 0AD. https://collections.library.yale.edu/catalog/2001074.

APA, 6th edition

The Pioneer Hose Company, Bismarck- Thrice Champions. (0 C.E.). [Group portraits]. [Walter F. Cushing, etc.]. https://collections.library.yale.edu/catalog/2001074.