Callcott, Wilfrid Hardy. The Caribbean policy of the United States, 1890-1920 / by Wilfrid Hardy Callcott. - 2. Octagon printing. - New York, NY : Octagon Books, 1977. - XIV, 524 S. Literaturverz. S. 496 - 512. ISBN: 0374912165 9780374912161 LC Class. No.: bC156t 1977