Smil, V. A. (2008). Global catastrophes and trends: The next 50 years.
Chicago Style citaatSmil, Vaclav; Author. Global Catastrophes and Trends: The Next 50 Years. Massachusetts, The MIT Press, 2008.
MLA citatieSmil, Vaclav; Author. Global Catastrophes and Trends: The Next 50 Years. 2008.
Let op: Deze citaties zijn niet altijd 100% accuraat.