Johns, S. W. (1992). "Nelson Rolihlahla Mandela". In H. Glickman (Ed.), Political Leaders of Contemporary African South of the Sahara: A Biographical Dictionary. Greenwood Press, Westport (Connecticut).

Johns, S. W. “"Nelson Rolihlahla Mandela".” In Political Leaders of Contemporary African South of the Sahara: A Biographical Dictionary, edited by Harvey Glickman. Greenwood Press, Westport (Connecticut), 1992.

Johns SW. "Nelson Rolihlahla Mandela". In: Glickman H, editor. Political Leaders of Contemporary African South of the Sahara: A Biographical Dictionary. Greenwood Press, Westport (Connecticut); 1992.

Johns, S. W. “"Nelson Rolihlahla Mandela".” Political Leaders of Contemporary African South of the Sahara: A Biographical Dictionary, edited by Harvey Glickman, Greenwood Press, Westport (Connecticut), 1992.

Johns SW. "Nelson Rolihlahla Mandela". In: Glickman H, editor. Political Leaders of Contemporary African South of the Sahara: A Biographical Dictionary. Greenwood Press, Westport (Connecticut); 1992.