Cita APA

Beethoven, L. v. 1., & Unger, M. 1. (1986). Symphony No. 1 C major, Op. 21. London: Ernst Eulenburg, Ltd..

Citación estilo Chicago

Beethoven, Ludwig van 1770-1827, y Max 1883-1959 Unger. Symphony No. 1 C Major, Op. 21. London: Ernst Eulenburg, Ltd., 1986.

Cita MLA

Beethoven, Ludwig van 1770-1827, y Max 1883-1959 Unger. Symphony No. 1 C Major, Op. 21. London: Ernst Eulenburg, Ltd., 1986.