APA-referens (7:e uppl.)

Birtwistle, H. (1979). Silbury Air: For chamber ensemble ; (1977, revised version 2003) / Harrison Birtwistle. Universal Ed..

Chicago-referens (17:e uppl.)

Birtwistle, Harrison. Silbury Air: For Chamber Ensemble ; (1977, Revised Version 2003) / Harrison Birtwistle. London: Universal Ed., 1979.

MLA-referens (8:e uppl.)

Birtwistle, Harrison. Silbury Air: For Chamber Ensemble ; (1977, Revised Version 2003) / Harrison Birtwistle. Universal Ed., 1979.