Evans, Richard (June 24, 2007). "Jack the Lad". The Observer. Diakses tanggal 2009-02-15.Jack Kramer "is ready to anoint Roger Federer as the best he has seen."
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"Salinan arsip"(PDF). Diarsipkan dari versi asli(PDF) tanggal 2009-09-26. Diakses tanggal 2007-01-25.