Butterfield, S. H. (2004). U.S. development aid--an historic first: Achievements and failures in the twentieth century. Praeger Publishers.
Citace podle Chicago (17th ed.)Butterfield, Samuel Hale. U.S. Development Aid--an Historic First: Achievements and Failures in the Twentieth Century. Westport, Conn.: Praeger Publishers, 2004.
Citace podle MLA (9th ed.)Butterfield, Samuel Hale. U.S. Development Aid--an Historic First: Achievements and Failures in the Twentieth Century. Praeger Publishers, 2004.
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