APA (7th ed.) Citation

Pärt, A., Hope, D., & Mulligan, S. Spiegel im Spiegel: = (Mirror in the mirror).

Chicago Style (17th ed.) Citation

Pärt, Arvo, Daniel Hope, and Simon Mulligan. Spiegel Im Spiegel: = (Mirror in the Mirror).

MLA (9th ed.) Citation

Pärt, Arvo, et al. Spiegel Im Spiegel: = (Mirror in the Mirror).