The World's best music :
a library of musical masterpieces.
Vol. I. Compositions for the pianoforte, concert selections /
Nicholas de Vore, editor-in-chief.

APA Citation

Werfel Collection. (1921). The World's best music: a library of musical masterpieces. International ed. New York: University Society.

MLA Citation

Werfel Collection. The World's Best Music: a Library of Musical Masterpieces. International ed. New York: University Society, 1921.

Warning: These citations may not always be complete (especially for serials).