Cite

[Proof book : On the lookout & Colorado cliffs [graphic] / by Thomas Moran]

MLA

Moran, Thomas, 1837-1926. [Proof book : On the lookout & Colorado cliffs [graphic] / by Thomas Moran]. ca. 1872]. https://collections.library.yale.edu/catalog/2012061.

APA, 6th edition

Moran, Thomas, 1837-1926. (ca. 1872])[[Proof book : On the lookout & Colorado cliffs [graphic] / by Thomas Moran]]. https://collections.library.yale.edu/catalog/2012061.