(1838-1842), U. S. E. E. (1840). Chart of the Antarctic continent shewing the icy barrier attached to it discovered by the U. S. Ex. Ex. Charles Wilkes, Esq. Commander 1840 / eng. by Sherman & Smith. United States. Hydrographic Office.
Chicago Style (17th ed.) Citation(1838-1842), United States Exploring Expedition. Chart of the Antarctic Continent Shewing the Icy Barrier Attached to It Discovered by the U. S. Ex. Ex. Charles Wilkes, Esq. Commander 1840 / Eng. by Sherman & Smith. United States. Hydrographic Office, 1840.
MLA (9th ed.) Citation(1838-1842), United States Exploring Expedition. Chart of the Antarctic Continent Shewing the Icy Barrier Attached to It Discovered by the U. S. Ex. Ex. Charles Wilkes, Esq. Commander 1840 / Eng. by Sherman & Smith. United States. Hydrographic Office, 1840.