Winter, J. (2008). Wangari's trees of peace: A true story from Africa. Harcourt, INC.
Lua i Stíl Chicago (17ú heag.)Winter, Jeanette. Wangari's Trees of Peace: A True Story from Africa. Orlando: Harcourt, INC, 2008.
Lua MLA (9ú heag.)Winter, Jeanette. Wangari's Trees of Peace: A True Story from Africa. Harcourt, INC, 2008.
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