Doyle, C. H. (1959). Beware of the "Soft-Sell" on Liberalism. St. Paul, Minn..
Lua i Stíl Chicago (17ú heag.)Doyle, Charles Hugo. Beware of the "Soft-Sell" on Liberalism. St. Paul, Minn., 1959.
Lua MLA (8ú heag.)Doyle, Charles Hugo. Beware of the "Soft-Sell" on Liberalism. St. Paul, Minn., 1959.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.