APA-referens (7:e uppl.)

Birk, W. O. (1949). Structural grammar for building sentences. D.C. Heath.

Chicago-referens (17:e uppl.)

Birk, William Otto. Structural Grammar for Building Sentences. Boston: D.C. Heath, 1949.

MLA-referens (9:e uppl.)

Birk, William Otto. Structural Grammar for Building Sentences. D.C. Heath, 1949.