(1991). Review of agricultural economics. Dept. of Agricultural Economics, Michigan State University.
Chicago-referens (17:e uppl.)Review of Agricultural Economics. East Lansing, MI: Dept. of Agricultural Economics, Michigan State University, 1991.
MLA-referens (8:e uppl.)Review of Agricultural Economics. Dept. of Agricultural Economics, Michigan State University, 1991.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.