Alan Randall. (2012). Risk and Precaution (1.). Cambridge University Press.
Chicago Style aipamenaAlan Randall. Risk and Precaution. 1. Cambridge University Press, 2012.
MLA aipamenaAlan Randall. Risk and Precaution. 1. Cambridge University Press, 2012.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.