- Anderson, David M. “Trees, Politics, and Nationalism: The Green Belt Movement in Kenya.” African Affairs 101, no. 404 (2002): 531–552.
- BBC News. “Wangari Maathai Profile.” September 26, 2011. https://www.bbc.com/news/world-africa-12303852.
- Encyclopaedia Britannica. “Wangari Maathai.” Encyclopaedia Britannica, Inc. https://www.britannica.com/biography/Wangari-Maathai.
- Green Belt Movement. “History of the Green Belt Movement.” https://www.greenbeltmovement.org.
- Maathai, Wangari. The Green Belt Movement: Sharing the Approach and the Experience. New York: Lantern Books, 2004.
- Maathai, Wangari. Unbowed: A Memoir. New York: Alfred A. Knopf, 2006.
- Mutua, Makau. “Wangari Maathai: Visionary Environmental Leader.” Harvard International Review 27, no. 4 (2006): 56–59.
- National Geographic. “Wangari Maathai and the Green Belt Movement.” https://www.nationalgeographic.com.
- Nobel Prize. “Wangari Maathai – Biographical.” https://www.nobelprize.org/prizes/peace/2004/maathai/biographical/.
- PBS. “Wangari Maathai: Taking Root.” https://www.pbs.org.
- The Guardian. “Wangari Maathai Obituary.” September 26, 2011. https://www.theguardian.com.
- The New York Times. “Wangari Maathai, Nobel Laureate, Dies at 71.” September 25, 2011. https://www.nytimes.com.
- Time Magazine. “Heroes of the Environment: Wangari Maathai.” https://time.com.
- United Nations. “Africa Renewal: Wangari Maathai and the Green Belt Movement.” https://www.un.org.
- United Nations Environment Programme. “Wangari Maathai and Environmental Leadership.” https://www.unep.org.
- World Bank. “Community-Based Environmental Sustainability in Kenya.” https://www.worldbank.org.
- Kenya National Archives. “Public Records on Wangari Maathai and Environmental Policy.” Government of Kenya.
