MLA

Idanha Hotel Boise, Idaho. Pub. by False Advertising, Made by Dexter Press, Inc, 0AD. https://collections.library.yale.edu/catalog/2015602.

APA, 6th edition

Idanha Hotel Boise, Idaho. (0 C.E.). [Pictorial works, Halftone photomechanical prints, Postcards]. Pub. by False Advertising, Made by Dexter Press, Inc. https://collections.library.yale.edu/catalog/2015602.