(1999). Annual Report 1998: Iowa State University Extension. Leading Iowa into the 21st century.
Cita Chicago (17th ed.)Annual Report 1998: Iowa State University Extension. Leading Iowa into the 21st Century. 1999.
Cita MLA (9th ed.)Annual Report 1998: Iowa State University Extension. Leading Iowa into the 21st Century. 1999.
Atenció: Aquestes cites poden no estar 100% correctes.