O'Higgins, B. (1959). Salute to Roger Casement. Dublin.
Lua i Stíl Chicago (17ú heag.)O'Higgins, Brian. Salute to Roger Casement. Dublin, 1959.
Lua MLA (8ú heag.)O'Higgins, Brian. Salute to Roger Casement. Dublin, 1959.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.