Penna, A. N., & Rivers, J. S. (2013). Natural disasters in a global environment. Wiley-Blackwell.
Lua i Stíl Chicago (17ú heag.)Penna, Anthony N., agus Jennifer S. Rivers. Natural Disasters in a Global Environment. Chichester, West Sussex, U.K.: Wiley-Blackwell, 2013.
Lua MLA (9ú heag.)Penna, Anthony N., agus Jennifer S. Rivers. Natural Disasters in a Global Environment. Wiley-Blackwell, 2013.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.