Gaya APA

Aburdene, P. (2007). The Extreme Future : The Top Trends that Will Reshape The World in The Next 20 Years . New York: Penguin Group.

Gaya MLA

Aburdene, Patricia. "The Extreme Future : The Top Trends that Will Reshape The World in The Next 20 Years". New York: Penguin Group, 2007. Text.