Não informado. (1969). Politica Internazionale. Institute for Relations with Africa, Latin America and the Middle East.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিNão informado. Politica Internazionale. Rome: Institute for Relations with Africa, Latin America and the Middle East, 1969.
M.L.A (8 ম সংস্করণ) উদ্ধৃতিNão informado. Politica Internazionale. Institute for Relations with Africa, Latin America and the Middle East, 1969.
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