Wisconsin. State Board of Agriculture. (1901). State of Wisconsin crop report. Wisconsin State Board of Agriculture.
Chicago-referens (17:e uppl.)Wisconsin. State Board of Agriculture. State of Wisconsin Crop Report. Madison, WI: Wisconsin State Board of Agriculture, 1901.
MLA-referens (8:e uppl.)Wisconsin. State Board of Agriculture. State of Wisconsin Crop Report. Wisconsin State Board of Agriculture, 1901.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.