(2007). TuneUp Utilities 2007 Benutzerhandbuch. TuneUp Software GmbH.
Cita Chicago (17th ed.)TuneUp Utilities 2007 Benutzerhandbuch. Darmstadt: TuneUp Software GmbH, 2007.
Cita MLA (8th ed.)TuneUp Utilities 2007 Benutzerhandbuch. TuneUp Software GmbH, 2007.
Atenció: Aquestes cites poden no estar 100% correctes.