APA-referens (7:e uppl.)

Não informado. (2007). Report of the Division of the Agriculture. Iowa State College, Division of the Agriculture.

Chicago-referens (17:e uppl.)

Não informado. Report of the Division of the Agriculture. Ames, Iowa: Iowa State College, Division of the Agriculture, 2007.

MLA-referens (8:e uppl.)

Não informado. Report of the Division of the Agriculture. Iowa State College, Division of the Agriculture, 2007.

Varning: dessa hänvisningar är inte alltid fullständigt riktiga.