The World We Once Lived In

MLA

Maathai, Wangari. The World We Once Lived In. s.l.: Penguin Books, 2010.

APA

Maathai, W. (2010). The World We Once Lived In. s.l.: Penguin Books.

Chicago

Maathai, Wangari The World We Once Lived In. s.l.: Penguin Books, 2010.