"Chomsky, N. (1972). Spheres of influence in the age of imperialism. Spokesman books publishers.
Chicago Style (17th ed.) Citation"Chomsky, Noam...[et.al]". Spheres of Influence in the Age of Imperialism. Spokesman books publishers, 1972.
MLA (9th ed.) Citation"Chomsky, Noam...[et.al]". Spheres of Influence in the Age of Imperialism. Spokesman books publishers, 1972.
Warning: These citations may not always be 100% accurate.