Dyfyniad APA

Alan Randall. (2012). Risk and Precaution (1.). Cambridge University Press.

Dyfyniad Arddull Chicago

Alan Randall. Risk and Precaution. 1. Cambridge University Press, 2012.

Dyfyniad MLA

Alan Randall. Risk and Precaution. 1. Cambridge University Press, 2012.

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