Cita APA

Klengel, J. 1., & Klengel, J. 1. (1930). Technical studies. New York, New York: Associated Music.

Citación estilo Chicago

Klengel, Julius 1859-1933, y Julius 1859-1933 Klengel. Technical Studies. New York, New York: Associated Music, 1930.

Cita MLA

Klengel, Julius 1859-1933, y Julius 1859-1933 Klengel. Technical Studies. New York, New York: Associated Music, 1930.