APA-referens (7:e uppl.)

(1999). Annual Report 1998: Iowa State University Extension. Leading Iowa into the 21st century.

Chicago-referens (17:e uppl.)

Annual Report 1998: Iowa State University Extension. Leading Iowa into the 21st Century. 1999.

MLA-referens (9:e uppl.)

Annual Report 1998: Iowa State University Extension. Leading Iowa into the 21st Century. 1999.

Varning: dessa hänvisningar är inte alltid fullständigt riktiga.