Dyfyniad APA
ebrary, Inc, Warner, D., & Palfreyman, D. (2003). Managing crisis. Open University Press.
Dyfyniad Arddull Chicago
ebrary, Inc, David Warner, and David Palfreyman. Managing Crisis. Maidenhead: Open University Press, 2003.
Dyfyniad MLA
ebrary, Inc, et al. Managing Crisis. Open University Press, 2003.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.