Wagner: Der Ring des Nibelungen - Complete Ring Cycle (Levine, Metropolitan Opera)
I Saw the World End: A Study of Wagner's Ring (Clarendon Paperbacks)
Wagner's Ring of the Nibelung: A Companion
Wagner: The Ring Without Words
Wagner's 'Ring' and its Symbols
Wagner's Ring: Turning the Sky Round (Limelight)
Wagner: The Ring of the Nibelung ( Das Rheingold / Die Walküre / Siegfried / Götterdämmerung) (Boulez/Chereau Ring Cycle)
Twilight of the Gods: The Essential Wagner Collection
Our Man: Richard Holbrooke and the End of the American Century