Distances between United States ports /

Chicago citation style
U.S. Coast and Geodetic Survey. Distances between United States ports /. 1938. Retrieved from the Digital Public Library of America, http://catalog.hathitrust.org/Record/100638036. (Accessed November 19, 2018.)
APA citation style
U.S. Coast and Geodetic Survey, (1938) Distances between United States ports /. Retrieved from the Digital Public Library of America, http://catalog.hathitrust.org/Record/100638036
MLA citation style
U.S. Coast and Geodetic Survey. Retrieved from the Digital Public Library of America <http://catalog.hathitrust.org/Record/100638036>.
Note: These citations are programmatically generated and may be incomplete.