Edwards, H. G. (1961). Specifications (2d ed.). Van Nostrand.
Lua i Stíl Chicago (17ú heag.)Edwards, H. Griffith. Specifications. 2d ed. Princeton, N. J.: Van Nostrand, 1961.
Lua MLA (8ú heag.)Edwards, H. Griffith. Specifications. 2d ed. Van Nostrand, 1961.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.