Tambo, Oliver. Preparing for power : Oliver Tambo speaks / Oliver Tambo. Fore word by Nelson Mandela. Compiled by Adelaide Tambo. - London : Heinemann , 1987. - xi, 269 p.: ill. ; 22 cm. - African writers series . Subjects--Corporate Names: African National Congress. Subjects--Geographic Terms: South Africa--History--1961- Dewey Class. No.: 968