1988

E.D.C. Publishing

Washington D.C.: Occidental Press

Washington D.C.: Regnery Gateway.

Washington D.C., Specemaker Press

Cambridge, Mass. ; Washington, D. C. : Institute for Foreign Policy Analysis

Wasington D.C., America´s Press

2001

Bogotá D. C. Editorial Carrera 7a. Ltda

Washington D. C. : Mage Publishers

Washington D.C.: Faulkner & Gray

Washington D.C., Dumbarton Oaks

Toronto; D. C. Heath 1984

Lexington : D. C. Heath Canada

Washington, D.C. : Design Editions

1992

Washington D.C.: Weltbank / Bonn: UNO-Verlag / Frankfurt: Fritz Knapp u.a.

Lexington, D.C. Heath and Co