Maathai, W. (2009). The challenge for Africa. Arrow Books.
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Tohutoru Kātū Chicago (17th ed.)
Maathai, Wangari. The Challenge for Africa. London: Arrow Books, 2009.
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Tohutoro MLA (9th ed.)
Maathai, Wangari. The Challenge for Africa. Arrow Books, 2009.
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Kua rahua te tārua ki te papatopenga
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