Gaya APA

Friedman, T, L. (2008). Hot,flat,crowded why the world needs a greem revolution - and how we can renew our global future . London: United States of America.

Gaya MLA

Friedman, Thomas, L.. "Hot,flat,crowded why the world needs a greem revolution - and how we can renew our global future". London: United States of America, 2008. Text.