(IDAHO & WASHINGTON) [Anon.] [Untitled map of northwestern Idaho and northeastern Washington].
MLA
(IDAHO & WASHINGTON) [Anon.] [Untitled Map of Northwestern Idaho and Northeastern Washington]. 0AD. https://collections.library.yale.edu/catalog/2016952.
APA, 6th edition
(IDAHO & WASHINGTON) [Anon.] [Untitled map of northwestern Idaho and northeastern Washington]. (0 C.E.). [Maps]. https://collections.library.yale.edu/catalog/2016952.