Cita APA

Vale, C. A. (1990). F. W. de Klerk. Orbis. - publ. by the Foreign Policy Research Institute of the University of Pennsylvania.

Citación estilo Chicago

Vale, Colin A. "F. W. De Klerk." Orbis. - Publ. by the Foreign Policy Research Institute of the University of Pennsylvania 1990.

Cita MLA

Vale, Colin A. "F. W. De Klerk." Orbis. - Publ. by the Foreign Policy Research Institute of the University of Pennsylvania, 1990.