Lua APA (7ú heag.)

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

Lua i Stíl Chicago (17ú heag.)

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

Lua MLA (9ú heag.)

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

Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.