Vance, C. R. (1983). Hard choices: Critical years in America's foreign policy. Simon and Schuster.
Cita Chicago Style (17a ed.)Vance, Cyrus Roberts. Hard Choices: Critical Years in America's Foreign Policy. New York: Simon and Schuster, 1983.
Cita MLA (9a ed.)Vance, Cyrus Roberts. Hard Choices: Critical Years in America's Foreign Policy. Simon and Schuster, 1983.
Precaución: Estas citas no son 100% exactas.