Association of Regional Weed Control Conferences\nWeed Society of America. Weeds. Association of Regional Weed Control Conferences.
Chicago-referens (17:e uppl.)Association of Regional Weed Control Conferences\nWeed Society of America. Weeds. Ithaca, NY: Association of Regional Weed Control Conferences.
MLA-referens (8:e uppl.)Association of Regional Weed Control Conferences\nWeed Society of America. Weeds. Association of Regional Weed Control Conferences.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.