The Radiological Society of North America. (1981). Radiology Volume 138 number 3 march 1981. The radiological society.
Lua i Stíl Chicago (17ú heag.)The Radiological Society of North America. Radiology Volume 138 Number 3 March 1981. : The radiological society, 1981.
Lua MLA (9ú heag.)The Radiological Society of North America. Radiology Volume 138 Number 3 March 1981. The radiological society, 1981.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.