Dyfyniad APA

K Bradley Penuel. (2013). Encyclopaedia of crisis management. Sage publishers.

Dyfyniad Arddull Chicago

K Bradley Penuel. Encyclopaedia of Crisis Management. California: Sage publishers, 2013.

Dyfyniad MLA

K Bradley Penuel. Encyclopaedia of Crisis Management. Sage publishers, 2013.

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