Falkowski. Lawrence S. (1978). Presidents, secretaries of state, and crisesin U.S. Foreign relations: A model and predictive Analysis. Westview.
Citazione stile Chigago Style (17a edizione)Falkowski. Lawrence S. Presidents, Secretaries of State, and Crisesin U.S. Foreign Relations: A Model and Predictive Analysis. Boulder, Colo: Westview, 1978.
Citatione MLA (9a ed.)Falkowski. Lawrence S. Presidents, Secretaries of State, and Crisesin U.S. Foreign Relations: A Model and Predictive Analysis. Westview, 1978.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.