Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.