Hall Gus. (1772). Imperialism Today: An Evaluation of Major Issues and Events of Our Time (4th ed.). International.
Citazione stile Chigago Style (17a edizione)Hall Gus. Imperialism Today: An Evaluation of Major Issues and Events of Our Time. 4th ed. New York: International, 1772.
Citatione MLA (9a ed.)Hall Gus. Imperialism Today: An Evaluation of Major Issues and Events of Our Time. 4th ed. International, 1772.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.