Cita APA (7th ed.)
Black, J. E., & Thompson, K. W. Foreign Policies in a World of Change. Harper and Row.
Cita Chicago (17th ed.)
Black, Joseph E., i Kenneth W. Thompson. Foreign Policies in a World of Change. Nueva York, EUA: Harper and Row.
Cita MLA (9th ed.)
Black, Joseph E., i Kenneth W. Thompson. Foreign Policies in a World of Change. Harper and Row.
Atenció: Aquestes cites poden no estar 100% correctes.