Alan Randall. (2012). Risk and Precaution (1.). Cambridge University Press.
Lua i Stíl Chicago (17ú heag.)Alan Randall. Risk and Precaution. 1. Cambridge University Press, 2012.
Lua MLA (8ú heag.)Alan Randall. Risk and Precaution. 1. Cambridge University Press, 2012.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.