Tohutoro APA (7th ed.)
Berlin, I. (1973). Karl Marx (1ra ed.). Alianza Editorial.
Tohutoru Kātū Chicago (17th ed.)
Berlin, Isaiah. Karl Marx. 1ra ed. Alianza Editorial, 1973.
Tohutoro MLA (9th ed.)
Berlin, Isaiah. Karl Marx. 1ra ed. Alianza Editorial, 1973.
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