Não informado. (1981). ACP observer. American College of Physicians.
Lua i Stíl Chicago (17ú heag.)Não informado. ACP Observer. Philadelphia, Pa: American College of Physicians, 1981.
Lua MLA (8ú heag.)Não informado. ACP Observer. American College of Physicians, 1981.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.