Não informado. (1970). Journal of Interamerican Studies and World Affairs. University of Miami, North South Center Publications Studies.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিNão informado. Journal of Interamerican Studies and World Affairs. Coral Gables, Fla: University of Miami, North South Center Publications Studies, 1970.
M.L.A (8 ম সংস্করণ) উদ্ধৃতিNão informado. Journal of Interamerican Studies and World Affairs. University of Miami, North South Center Publications Studies, 1970.
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