Wagner a biography 
Westernhagen, Curt von.
Whittall, Mary.
Cambridge Cambridge University Press,
1978
In 2 vols
Translation of: 'Wagner'. 2nd, rev. and enlarged ed. Zürich : Atlantis Musikbuch-Verlag, 1978
Bibliography: p.xxii-xxiii
Wagner, Richard, 1813-1883.
Composers
Opera