This business of singing,
by Pierre Key.
APA Citation
Key, P. V. R. (Pierre Van Rensselaer). (1937). This business of singing. New York: Pierre Key publishing corporation.
MLA Citation
Key, Pierre V. R. (Pierre Van Rensselaer), 1872-1945. This Business of Singing. New York: Pierre Key publishing corporation, 1937.
Warning: These citations may not always be complete (especially for serials).