"Angus McDonald. Factor, Hudson Bay Co." Photographic print, 20.1 x 11.9 cm. on mount 34.5 x 27.3 cm.
MLA
"Angus McDonald. Factor, Hudson Bay Co." Photographic Print, 20.1 x 11.9 Cm. on Mount 34.5 x 27.3 Cm. 0AD. https://collections.library.yale.edu/catalog/16386873.
APA, 6th edition
"Angus McDonald. Factor, Hudson Bay Co." Photographic print, 20.1 x 11.9 cm. on mount 34.5 x 27.3 cm. (0 C.E.). [Photographic prints, Portraits]. https://collections.library.yale.edu/catalog/16386873.