APA (7th ed.) Citation

Poppe, E., Surberg, E., & Kofler, B. (2000). Rad. [G. Ricordi Co.].

Chicago Style (17th ed.) Citation

Poppe, Enno, Ernst Surberg, and Benjamin Kofler. Rad. [München]: [G. Ricordi Co.], 2000.

MLA (9th ed.) Citation

Poppe, Enno, et al. Rad. [G. Ricordi Co.], 2000.