Wagner : a documentary study

MLA

Barth, Herbert, et al. Wagner : a Documentary Study. London: Thames and Hudson, 1975.

APA

Barth, H., Boulez, P., Ford, P. R. J, Mack, D., Voss, E., & Whittall, M. (1975). Wagner : a documentary study. London: Thames and Hudson.

Chicago

Boulez, Pierre, Wagner: A Documentary Study. Translated by P. R. J Ford and Mary Whittall. Edited by Herbert Barth and Dietrich Mack and Egon Voss. London: Thames and Hudson, 1975.