APA-referens (7:e uppl.)

Bragdon, C. F. (1922). The beautiful necessity: Seven essays on theosophy and architecture (2d ed.). A.A. Knopf.

Chicago-referens (17:e uppl.)

Bragdon, Claude Fayette. The Beautiful Necessity: Seven Essays on Theosophy and Architecture. 2d ed. New York: A.A. Knopf, 1922.

MLA-referens (8:e uppl.)

Bragdon, Claude Fayette. The Beautiful Necessity: Seven Essays on Theosophy and Architecture. 2d ed. A.A. Knopf, 1922.