Clark, H. H. (1938). Addresses upon the American road. C. Scribner's Sons.
Lua i Stíl Chicago (17ú heag.)Clark, Herbert Hoover. Addresses upon the American Road. New York: C. Scribner's Sons, 1938.
Lua MLA (9ú heag.)Clark, Herbert Hoover. Addresses upon the American Road. C. Scribner's Sons, 1938.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.