Boyd, I. (1975). The novels of G. K. Chesterton: A study in art and propaganda. Elek.
Lua i Stíl Chicago (17ú heag.)Boyd, Ian. The Novels of G. K. Chesterton: A Study in Art and Propaganda. London: Elek, 1975.
Lua MLA (8ú heag.)Boyd, Ian. The Novels of G. K. Chesterton: A Study in Art and Propaganda. Elek, 1975.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.