Langston, H. (1981). Aspirin and the stomach.
Lua i Stíl Chicago (17ú heag.)Langston, H. Aspirin and the Stomach. 1981.
Lua MLA (9ú heag.)Langston, H. Aspirin and the Stomach. 1981.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.