Brown, L. R. (1973). World without borders. Vintage.
Lua i Stíl Chicago (17ú heag.)Brown, Lester R. World Without Borders. Nueva York: Vintage, 1973.
Lua MLA (9ú heag.)Brown, Lester R. World Without Borders. Vintage, 1973.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.