Dyfyniad APA

Haddow, G. D., Bullock, J. A., & Coppola, D. P. (2008). Introduction to emergency management (3rd ed.). Elsevier/Butterworth-Heinemann.

Dyfyniad Arddull Chicago

Haddow, George D., Jane A. Bullock, and Damon P. Coppola. Introduction to Emergency Management. 3rd ed. Amsterdam ; Boston: Elsevier/Butterworth-Heinemann, 2008.

Dyfyniad MLA

Haddow, George D., et al. Introduction to Emergency Management. 3rd ed. Elsevier/Butterworth-Heinemann, 2008.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.