Παραπομπή σε μορφή APA (7η εκδ.)

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

Παραπομπή σε μορφή Chicago (17η εκδ.)

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

Παραπομπή σε μορφή MLA (9th εκδ.)

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