APA

Schumann C., Schumann R. & Weissweiler E. (1994). The complete correspondence of Clara and Robert Schumann. New York: P. Lang.

Chicago

Schumann Clara, Schumann Robert and Weissweiler Eva. 1994. The complete correspondence of Clara and Robert Schumann. New York: P. Lang.

Harvard

Schumann C., Schumann R. and Weissweiler E. (1994). The complete correspondence of Clara and Robert Schumann. New York: P. Lang.

MLA

Schumann Clara, Schumann Robert and Weissweiler Eva. The complete correspondence of Clara and Robert Schumann. New York: P. Lang. 1994.