APA
Thomas L. Friedman, . (2008). Hot ,Flat and Crowded why the world needs a green Revolution and how we can renew our Global Future. : Penguin Group.
Chicago
Thomas L. Friedman, . 2008. Hot ,Flat and Crowded why the world needs a green Revolution and how we can renew our Global Future. : Penguin Group.
Harvard
Thomas L. Friedman, . (2008). Hot ,Flat and Crowded why the world needs a green Revolution and how we can renew our Global Future. : Penguin Group.
MLA
Thomas L. Friedman, . Hot ,Flat and Crowded why the world needs a green Revolution and how we can renew our Global Future. : Penguin Group. 2008.