Pearson, H. (1942). G. B. S: A full length portrait. Harper.
Lua i Stíl Chicago (17ú heag.)Pearson, Hesketh. G. B. S: A Full Length Portrait. New York ; London: Harper, 1942.
Lua MLA (8ú heag.)Pearson, Hesketh. G. B. S: A Full Length Portrait. Harper, 1942.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.