O'Callaghan, W. P. (1937). Undulant fever in Ireland. Tables.
Lua i Stíl Chicago (17ú heag.)O'Callaghan, William Patrick. Undulant Fever in Ireland. Tables. 1937.
Lua MLA (9ú heag.)O'Callaghan, William Patrick. Undulant Fever in Ireland. Tables. 1937.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.
