APA (7th ed.) Citation

Allegri String Quartet, Allegro Films (London, England), Ashkenazy, V., Nupen, M., Nupen, C., & Schoenberg, A. (1985). The language of the new music. Allegro Films.

Chicago Style (17th ed.) Citation

Allegri String Quartet, England) Allegro Films (London, Vladimir Ashkenazy, Michael Nupen, Christopher Nupen, and Arnold Schoenberg. The Language of the New Music. Guildford, England: Allegro Films, 1985.

MLA (9th ed.) Citation

Allegri String Quartet, et al. The Language of the New Music. Allegro Films, 1985.