Cita APA (7th ed.)
(Jul 2010). 2009 GED Testing Program Statistical Report. GED Testing Service.
Cita Chicago (17th ed.)
"2009 GED Testing Program Statistical Report." GED Testing Service Jul 2010.
Cita MLA (9th ed.)
"2009 GED Testing Program Statistical Report." GED Testing Service, Jul 2010.
Atenció: Aquestes cites poden no estar 100% correctes.