APA (7th ed.) Citation

Wagner, R., Verdi, G., Leoncavallo, R., Ritter, R., & Gurlitt, M. (2007). Rudolf Ritter: (1878 - 1966). [Preiser].

Chicago Style (17th ed.) Citation

Wagner, Richard, Giuseppe Verdi, Ruggiero Leoncavallo, Rudolf Ritter, and Manfred Gurlitt. Rudolf Ritter: (1878 - 1966). [Wien]: [Preiser], 2007.

MLA (9th ed.) Citation

Wagner, Richard, et al. Rudolf Ritter: (1878 - 1966). [Preiser], 2007.