"Chomsky, N. (1972). Spheres of influence in the age of imperialism. Spokesman books publishers.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र"Chomsky, Noam...[et.al]". Spheres of Influence in the Age of Imperialism. Spokesman books publishers, 1972.
एमएलए (9वां संस्करण) प्रशस्ति पत्र"Chomsky, Noam...[et.al]". Spheres of Influence in the Age of Imperialism. Spokesman books publishers, 1972.
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