APA (7th ed.) Citation

Wagner, R., Haenchen, H., Fogh Andersen, S., Clark, G., Dohmen, A., Kannen, G. v., . . . Schlotz, R. (2006). Siegfried. Etcetera.

Chicago Style (17th ed.) Citation

Wagner, Richard, et al. Siegfried. [Amsterdam]: Etcetera, 2006.

MLA (9th ed.) Citation

Wagner, Richard, et al. Siegfried. Etcetera, 2006.