Cita APA (7th ed.)

Whistler, H. S., & Hummel, H. A. (1954). First etude album for violin. Rubank.

Cita Chicago (17th ed.)

Whistler, Harvey S., i Herman A. Hummel. First Etude Album for Violin. Chicago, IL: Rubank, 1954.

Cita MLA (9th ed.)

Whistler, Harvey S., i Herman A. Hummel. First Etude Album for Violin. Rubank, 1954.