Hänvisningar gällande denna post

APA-referens (7:e uppl.)
(1897). Map showing condition and progress of astronomic location, primary triangulation, primary traverse and precise leveling for the year fiscal 1896-7. U. S. Geological Survey.
Chicago-referens (17:e uppl.)
Map Showing Condition and Progress of Astronomic Location, Primary Triangulation, Primary Traverse and Precise Leveling for the Year Fiscal 1896-7. U. S. Geological Survey, 1897.
MLA-referens (9:e uppl.)
Map Showing Condition and Progress of Astronomic Location, Primary Triangulation, Primary Traverse and Precise Leveling for the Year Fiscal 1896-7. U. S. Geological Survey, 1897.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.