Map of the Valley of the Amazon : to accompany Lt. Herndon's report / Drawn by H.C. Elliott.
MLA
Map of the Valley of the Amazon : to Accompany Lt. Herndon's Report / Drawn by H.C. Elliott. A. Hoen & Co., 1854. https://collections.library.yale.edu/catalog/15821120.
APA, 6th edition
Map of the Valley of the Amazon : to accompany Lt. Herndon's report / Drawn by H.C. Elliott. (1854). [Maps]. A. Hoen & Co., https://collections.library.yale.edu/catalog/15821120.