Dyfyniad APA

Hyer, R. N., & Covello, V. T. (2007). Effective media communication during public health emergencies: A WHO handbook. World Health Organization.

Dyfyniad Arddull Chicago

Hyer, Randall N., and Vincent T. Covello. Effective Media Communication During Public Health Emergencies: A WHO Handbook. Geneva, Switzerland: World Health Organization, 2007.

Dyfyniad MLA

Hyer, Randall N., and Vincent T. Covello. Effective Media Communication During Public Health Emergencies: A WHO Handbook. World Health Organization, 2007.

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